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1. Single-dose administration and the influence of the timing of the booster dose on immunogenicity and efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine: a pooled analysis of four randomised trials

Author

Aban, Marites, Abeyskera, Kushala W.M., Aboagye, Jeremy, Adam, Matthew, Adams, Kirsty, Adamson, James P., Adewatan, Gbadebo, Adlou, Syed, Ahmed, Khatija, Akhalwaya, Yasmeen, Akhalwaya, Saajida, Alcock, Andrew, Ali, Aabidah, Allen, Elizabeth R., Allen, Lauren, Alvernaz, Felipe B., Amorim, Fabio Santos, Andrade, Claudia Sala, Andritsou, Foteini, Anslow, Rachel, Arbe-Barnes, Edward H., Ariaans, Mark P., Arns, Beatriz, Arruda, Laiana, Assad, Luiza, Azi, Paula De Almeida, Azi, Lorena De Almeida, Babbage, Gavin, Bailey, Catherine, Baker, Kenneth F., Baker, Megan, Baker, Natalie, Baker, Philip, Baleanu, Ioana, Bandeira, Danieli, Bara, Anna, Barbosa, Marcella A.S., Barker, Debbie, Barlow, Gavin D., Barnes, Eleanor, Barr, Andrew S., Barrett, Jordan R., Barrett, Jessica, Barrett, Kelly, Bates, Louise, Batten, Alexander, Beadon, Kirsten, Beales, Emily, Beckley, Rebecca, Belij-Rammerstorfer, Sandra, Bell, Jonathan, Bellamy, Duncan, Belton, Sue, Berg, Adam, Bermejo, Laura, Berrie, Eleanor, Berry, Lisa, Berzenyi, Daniella, Beveridge, Amy, Bewley, Kevin R., Bharaj, Inderjeet, Bhikha, Sutika, Bhorat, Asad E., Bhorat, Zaheda E., Bijker, Else Margreet, Birch, Sarah, Birch, Gurpreet, Birchall, Kathryn, Bird, Adam, Bird, Olivia, Bisnauthsing, Karen, Bittaye, Mustapha, Blackwell, Luke, Blacow, Rachel, Bletchly, Heather, Blundell, Caitlin L., Blundell, Susannah R., Bodalia, Pritesh, Bolam, Emma, Boland, Elena, Bormans, Daan, Borthwick, Nicola, Bowring, Francesca, Boyd, Amy, Bradley, Penny, Brenner, Tanja, Bridges-Webb, Alice, Brown, Phillip, Brown, Claire, Brown-O'Sullivan, Charlie, Bruce, Scott, Brunt, Emily, Budd, William, Bulbulia, Yusuf A., Bull, Melanie, Burbage, Jamie, Burn, Aileen, Buttigieg, Karen R., Byard, Nicholas, Cabrera Puig, Ingrid, Calvert, Anna, Camara, Susana, Cao, Michelangelo, Cappuccini, Federica, Cardona, Rita, Cardoso, João R., Carr, Melanie, Carroll, Miles W., Carson-Stevens, Andrew, Carvalho, Yasmin de M., Casey, Helen R., Cashen, Paul, Castro, Thais R.Y., Castro, Lucia Carratala, Cathie, Katrina, Cavey, Ana, Cerbino-Neto, José, Cezar, Luiz Fernando F., Chadwick, Jim, Chanice, Chanice, Chapman, David, Charlton, Sue, Cheliotis, Katerina S., Chelysheva, Irina, Chester, Oliver, Chiplin, Emily, Chita, Sunder, Cho, Jee-Sun, Cifuentes, Liliana, Clark, Elizabeth, Clark, Matthew, Colin-Jones, Rachel, Collins, Sarah L.K., Colton, Hayley, Conlon, Christopher P., Connarty, Sean, Coombes, Naomi, Cooper, Cushla, Cooper, Rachel, Cornelissen, Lynne, Corrah, Tumena, Cosgrove, Catherine A., Costa, Fernanda Barroso, Cox, Tony, Crocker, Wendy E.M., Crosbie, Sarah, Cullen, Dan, Cunha, Debora R.M.F., Cunningham, Christina J., Cuthbertson, Fiona C., da Costa, Daniel Marinho, Da Guarda, Suzete N. Farias, da Silva, Larissa P., da Silva Moraes, Antonio Carlos, Damratoski, Brad E., Danos, Zsofia, Dantas, Maria T.D.C., Datoo, Mehreen S., Datta, Chandrabali, Davids, Malika, Davies, Sarah L., Davies, Kelly, Davies, Hannah, Davies, Sophie, Davies, Judith, Davis, Elizabeth J., Davis, John, de Carvalho, José A.M., De Jager, Jeanne, de Jesus Jnr, Sergio, De Oliveira Kalid, Lis Moreno, Dearlove, David, Demissie, Tesfaye, Desai, Amisha, Di Marco, Stefania, Di Maso, Claudio, Dinesh, Tanya, Docksey, Claire, Dong, Tao, Donnellan, Francesca R., Dos Santos, Tannyth Gomes, Dos Santos, Thainá G., Dos Santos, Erika Pachecho, Douglas, Naomi, Downing, Charlotte, Drake, Jonathan, Drake-Brockman, Rachael, Drury, Ruth, Du Plessis, Joan, Dunachie, Susanna J., Duncan, Andrew, Easom, Nicholas J.W., Edwards, Mandy, Edwards, Nick J., Edwards, Frances, El Muhanna, Omar M., Elias, Sean C., Ellison-Handley, Branwen, Elmore, Michael J., English, Marcus Rex, Esmail, Alisgair, Essack, Yakub Moosa, Farooq, Mutjaba, Fedosyuk, Sofiya, Felle, Sally, Ferguson, Susie, Ferreira Da Silva, Carla, Field, Samantha, Fisher, Richard, Fletcher, James, Fofie, Hazel, Fok, Henry, Ford, Karen J., Fothergill, Ross, Fowler, Jamie, Fraiman, Pedro H.A., Francis, Emma, Franco, Marilia M., Frater, John, Freire, Marilúcia S.M., Fry, Samantha H., Fudge, Sabrina, Furlan Filho, Renato, Furze, Julie, Fuskova, Michelle, Galian-Rubio, Pablo, Garlant, Harriet, Gavrila, Madita, Gibbons, Karyna A., Gilbride, Ciaran, Gill, Hardeep, Godwin, Kerry, Gokani, Karishma, Gonçalves, Maria Luisa Freire, Gonzalez, Isabela G.S., Goodall, Jack, Goodwin, Jayne, Goondiwala, Amina, Gordon-Quayle, Katherine, Gorini, Giacomo, Goyanna, Alvaro, Grab, Janet, Gracie, Lara, Green, Justin, Greenwood, Nicola, Greffrath, Johann, Groenewald, Marisa M., Gunawardene, Anishka, Gupta, Gaurav, Hackett, Mark, Hallis, Bassam, Hamaluba, Mainga, Hamilton, Elizabeth, Hamlyn, Joseph, Hammersley, Daniel, Hanrath, Aidan T., Hanumunthadu, Brama, Harris, Stephanie A., Harris, Clair, Harrison, Thomas D., Harrison, Daisy, Harris-Wright, Tara A., Hart, Thomas C., Hartnell, Birgit, Haughney, John, Hawkins, Sophia, Hayano, Laís Y.M., Head, Ian, Heath, Paul T., Henry, John Aaron, Hermosin Herrera, Macarena, Hettle, David B., Higa, Cristhiane, Hill, Jennifer, Hodges, Gina, Hodgson, Susanne, Horne, Elizea, Hou, Mimi M., Houlihan, Catherine F., Howe, Elizabeth, Howell, Nicola, Humphreys, Jonathan, Humphries, Holly E., Hurley, Katrina, Huson, Claire, Hyams, Catherine, Hyder-Wright, Angela, Ikram, Sabina, Ishwarbhai, Alka, Iveson, Poppy, Iyer, Vidyashankara, Jackson, Frederic, Jackson, Susan, Jaumdally, Shameem, Jeffers, Helen, Jesudason, Natasha, Jones, Carina, Jones, Christopher, Jones, Kathryn, Jones, Elizabeth, Jorge, Marianna Rocha, Joshi, Amar, Júnior, Eduardo A.M.S., Kailath, Reshma, Kana, Faeeza, Kar, Arnab, Karampatsas, Konstantinos, Kasanyinga, Mwila, Kay, Linda, Keen, Jade, Kellett Wright, Johanna, Kelly, Elizabeth J., Kelly, Debbie, Kelly, Dearbhla M., Kelly, Sarah, Kerr, David, Khan, Liaquat, Khozoee, Baktash, Khurana, Ankush, Kidd, Sarah, Killen, Annabel, Kinch, Jasmin, Kinch, Patrick, King, Lloyd D.W., King, Thomas B., Kingham, Lucy, Klenerman, Paul, Kluczna, Diana M., Knapper, Francesca, Knight, Julian C., Knott, Daniel, Koleva, Stanislava, Lages, Pedro M., Lang, Matilda, Lang, Gail, Larkworthy, Colin W., Larwood, Jessica P.J., Law, Rebecca, Lawrie, Alison M., Lazarus, Erica M., Leach, Amanda, Lees, Emily A., Lelliott, Alice, Lemm, Nana-Marie, Lessa, Alvaro Edson Ramos, Leung, Stephanie, Li, Yuanyuan, Lias, Amelia M., Liatsikos, Konstantinos, Linder, Aline, Lipworth, Samuel, Liu, Shuchang, Liu, Xinxue, Lloyd, Adam, Lloyd, Stephanie, Loew, Lisa, Lopez Ramon, Raquel, Lora, Leandro Bonecker, Luz, Kleber Giovanni, MacDonald, Jonathan C., MacGregor, Gordon, Madhavan, Meera, Mainwaring, David O., Makambwa, Edson, Makinson, Rebecca, Malahleha, Mookho, Malamatsho, Ross, Mallett, Garry, Manning, Nicola, Mansatta, Kushal, Maoko, Takalani, Marinou, Spyridoula, Marlow, Emma, Marques, Gabriela N., Marriott, Paula, Marshall, Richard P., Marshall, Julia L., Masenya, Masebole, Masilela, Mduduzi, Masters, Shauna K., Mathew, Moncy, Matlebjane, Hosea, Matshidiso, Kedidimetse, Mazur, Olga, Mazzella, Andrea, McCaughan, Hugh, McEwan, Joanne, McGlashan, Joanna, McInroy, Lorna, McRobert, Nicky, McSwiggan, Steve, Megson, Clare, Mehdipour, Savviz, Meijs, Wilma, Mendonça, Renata N.Õ., Mentzer, Alexander J., Mesquita, Ana Carolina F., Miralhes, Patricia, Mirtorabi, Neginsadat, Mitton, Celia, Mnyakeni, Sibusiso, Moghaddas, Fiona, Molapo, Kgaogelo, Moloi, Mapule, Moore, Maria, Moran, Marni, Morey, Ella, Morgans, Róisín, Morris, Susan J., Morris, Sheila, Morrison, Hazel, Morselli, Franca, Morshead, Gertraud, Morter, Richard, Mottay, Lynelle, Moultrie, Andrew, Moyo, Nathifa, Mpelembue, Mushiya, Msomi, Sibekezelo, Mugodi, Yvonne, Mukhopadhyay, Ekta, Muller, Jilly, Munro, Alasdair, Murphy, Sarah, Mweu, Philomena, Myerscough, Christopher, Naik, Gurudutt, Naker, Kush, Nastouli, Eleni, Ndlovu, Bongani, Nikolaou, Elissavet, Njenga, Cecilia, Noal, Helena C., Noé, Andrés, Novaes, Gabrielle, Nugent, Fay L., Nunes, Géssika Lanzillo A., O'Brien, Katie, O'Connor, Daniel, Oelofse, Suzette, Oguti, Blanche, Olchawski, Victoria, Oldfield, Neil J., Oliveira, Marianne G., Oliveira, Catarina, Oliveira, Isabelle Silva Queiroz, Oommen-Jose, Aylin, Oosthuizen, Angela, O'Reilly, Paula, O'Reilly, Peter J., Osborne, Piper, Owen, David R.J., Owen, Lydia, Owens, Daniel, Owino, Nelly, Pacurar, Mihaela, Paiva, Brenda V.B., Palhares, Edna M.F., Palmer, Susan, Parracho, Helena M. R.T., Parsons, Karen, Patel, Dipak, Patel, Bhumika, Patel, Faeezah, Patrick-Smith, Maia, Payne, Ruth O., Peng, Yanchun, Penn, Elizabeth J., Pennington, Anna, Peralta Alvarez, Marco Polo, Pereira Stuchi, Bruno Pereira, Perez, Ana Luiza, Perinpanathan, Tanaraj, Perring, James, Perumal, Rubeshan, Petkar, Sahir Yusuf, Philip, Tricia, Phillips, Jennifer, Phohu, Mary Kgomotso, Pickup, Lorinda, Pieterse, Sonja, Pinheiro, Jessica Morgana, Piper, Jo, Pipini, Dimitra, Plank, Mary, Plant, Sinéad, Pollard, Samuel, Pooley, Jennifer, Pooran, Anil, Poulton, Ian, Powers, Claire, Presa, Fernando B., Price, David A., Price, Vivien, Primeira, Marcelo R., Proud, Pamela C., Provstgaard-Morys, Samuel, Pueschel, Sophie, Pulido, David, Quaid, Sheena, Rabara, Ria, Radia, Kajal, Rajapaska, Durga, Rajeswaran, Thurkka, Ramos, Leonardo, Ramos, Alberto San Francisco, Ramos Lopez, Fernando, Rampling, Tommy, Rand, Jade, Ratcliffe, Helen, Rawlinson, Tom, Rea, David, Rees, Byron, Resuello-Dauti, Mila, Reyes Pabon, Emilia, Rhead, Sarah, Riaz, Tawassal, Ricamara, Marivic, Richards, Alexander, Richter, Alex, Ritchie, Neil, Ritchie, Adam J., Robbins, Alexander J., Roberts, Hannah, Robinson, Ryan E., Roche, Sophie, Rollier, Christine, Rose, Louisa, Ross Russell, Amy L., Rossouw, Lindie, Royal, Simon, Rudiansyah, Indra, Ryalls, Kim, Sabine, Charlotte, Saich, Stephen, Sale, Jessica C., Salman, Ahmed M., Salvador, Natalia, Salvador, Stephannie, Sampaio, Milla Dias, Samson, Annette D., Sanchez-Gonzalez, Amada, Sanders, Helen, Sanders, Katherine, Santos, Erika, Santos Guerra, Mayara F.S., Satti, Iman, Saunders, Jack E., Saunders, Caroline, Sayed, Aakifah Bibi Arif, Schim van der Loeff, Ina, Schmid, Annina B., Schofield, Ella, Screaton, Gavin R., Seddiqi, Samiullah, Segireddy, Rameswara R., Senger, Roberta, Serrano, Sonia, Shaik, Imam, Sharpe, Hannah R., Sharrocks, Katherine, Shaw, Robert, Shea, Adam, Sheehan, Emma, Shepherd, Amy, Shiham, Farah, Silk, Sarah E., Silva-Reyes, Laura, Silveira, Lidiana B. T.D., Silveira, Mariana B.V., Singh, Nisha, Sinha, Jaisi, Skelly, Donal T., Smith, Daniel C., Smith, Nick, Smith, Holly E., Smith, David J., Smith, Catherine C., Soares, Airanuédida S., Solórzano, Carla, Sorio, Guilherme L., Sorley, Kim, Sosa-Rodriguez, Tiffany, Souza, Cinthia M.C.D.L., Souza, Bruno S.D.F., Souza, Alessandra R., Souza Lopez, Thamyres, Sowole, Luciana, Spencer, Alexandra J., Spoors, Louise, Stafford, Lizzie, Stamford, Imogen, Stein, Ricardo, Stockdale, Lisa, Stockwell, Lisa V., Strickland, Louise H., Stuart, Arabella, Sturdy, Ann, Sutton, Natalina, Szigeti, Anna, Tahiri-Alaoui, Abdessamad, Tanner, Rachel, Taoushanis, Carol, Tarr, Alexander W., Tarrant, Richard, Taylor, Keja, Taylor, Ursula, Taylor, Iona Jennifer, Taylor, Justin, te Water Naude, Rebecca, Templeton, Kate, Themistocleous, Yrene, Themistocleous, Andreas, Thomas, Merin, Thomas, Kelly, Thomas, Tonia M., Thombrayil, Asha, Thompson, Julia, Thompson, Fawziyah, Thompson, Ameeka, Thompson, Amber, Thompson, Kevin, Thornton-Jones, Viv, Thotusi, Larissa H.S., Tighe, Patrick J., Tinoco, Lygia Accioly, Tiongson, Gerlynn Ferreras, Tladinyane, Bonolo, Tomasicchio, Michele, Tomic, Adriana, Tonks, Susan, Towner, James, Tran, Nguyen, Tree, Julia A., Trillana, Gerry, Trinham, Charlotte, Trivett, Rose, Truby, Adam, Tsheko, Betty Lebogang, Tubb, Philippa, Turabi, Aadil, Turner, Richard, Turner, Cheryl, Turner, Nicola, Tyagi, Bhavya, Ulaszewska, Marta, Underwood, Benjamin R., van Eck, Samual, Varughese, Rachel, Verbart, Dennis, Verheul, Marije K., Vichos, Iason, Vieira, Taiane A., Walker, Gemma, Walker, Laura, Wand, Matthew E., Wardell, Theresa, Warimwe, George M., Warren, Sarah C., Watkins, Bridget, Watson, Marion E.E., Watson, Ekaterina, Webb, Stewart, Webster, Angela, Welch, Jessica, Wellbelove, Zoe, Wells, Jeanette H., West, Alison J., White, Beth, White, Caroline, White, Rachel, Williams, Paul, Williams, Rachel L., Willingham, Silvia, Winslow, Rebecca, Woods, Danielle, Woodyer, Mark, Worth, Andrew T., Wright, Danny, Wroblewska, Marzena, Yao, Andy, Yim, Yee Ting Nicole, Zambrano, Marina Bauer, Zimmer, Rafael Leal, Zizi, Dalila, Zuidewind, Peter, Voysey, Merryn, Costa Clemens, Sue Ann, Madhi, Shabir A, Weckx, Lily Y, Folegatti, Pedro M, Aley, Parvinder K, Angus, Brian, Baillie, Vicky L, Barnabas, Shaun L, Bhorat, Qasim E, Bibi, Sagida, Briner, Carmen, Cicconi, Paola, Clutterbuck, Elizabeth A, Collins, Andrea M, Cutland, Clare L, Darton, Thomas C, Dheda, Keertan, Dold, Christina, Duncan, Christopher J A, Emary, Katherine R W, Ewer, Katie J, Flaxman, Amy, Fairlie, Lee, Faust, Saul N, Feng, Shuo, Ferreira, Daniela M, Finn, Adam, Galiza, Eva, Goodman, Anna L, Green, Catherine M, Green, Christopher A, Greenland, Melanie, Hill, Catherine, Hill, Helen C, Hirsch, Ian, Izu, Alane, Jenkin, Daniel, Joe, Carina C D, Kerridge, Simon, Koen, Anthonet, Kwatra, Gaurav, Lazarus, Rajeka, Libri, Vincenzo, Lillie, Patrick J, Marchevsky, Natalie G, Marshall, Richard P, Mendes, Ana V A, Milan, Eveline P, Minassian, Angela M, McGregor, Alastair, Mujadidi, Yama F, Nana, Anusha, Padayachee, Sherman D, Phillips, Daniel J, Pittella, Ana, Plested, Emma, Pollock, Katrina M, Ramasamy, Maheshi N, Ritchie, Adam J, Robinson, Hannah, Schwarzbold, Alexandre V, Smith, Andrew, Song, Rinn, Snape, Matthew D, Sprinz, Eduardo, Sutherland, Rebecca K, Thomson, Emma C, Török, M Estée, Toshner, Mark, Turner, David P J, Vekemans, Johan, Villafana, Tonya L, White, Thomas, Williams, Christopher J, Douglas, Alexander D, Hill, Adrian V S, Lambe, Teresa, Gilbert, Sarah C, and Pollard, Andrew J

Published
2021
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2. Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK

Author

Aban, Marites, Abayomi, Fatola, Abeyskera, Kushala, Aboagye, Jeremy, Adam, Matthew, Adams, Kirsty, Adamson, James, Adelaja, Yemi A., Adewetan, Gbadebo, Adlou, Syed, Ahmed, Khatija, Akhalwaya, Yasmeen, Akhalwaya, Saajida, Alcock, Andrew, Ali, Aabidah, Allen, Elizabeth R., Allen, Lauren, Almeida, Thamires C. D. S. C, Alves, Mariana P.S., Amorim, Fabio, Andritsou, Foteini, Anslow, Rachel, Appleby, Matthew, Arbe-Barnes, Edward H., Ariaans, Mark P., Arns, Beatriz, Arruda, Laiana, Azi, Paula, Azi, Lorena, Babbage, Gavin, Bailey, Catherine, Baker, Kenneth F., Baker, Megan, Baker, Natalie, Baker, Philip, Baldwin, Lisa, Baleanu, Ioana, Bandeira, Danieli, Bara, Anna, Barbosa, Marcella A.S., Barker, Debbie, Barlow, Gavin D., Barnes, Eleanor, Barr, Andrew S., Barrett, Jordan R., Barrett, Jessica, Bates, Louise, Batten, Alexander, Beadon, Kirsten, Beales, Emily, Beckley, Rebecca, Belij-Rammerstorfer, Sandra, Bell, Jonathan, Bellamy, Duncan, Bellei, Nancy, Belton, Sue, Berg, Adam, Bermejo, Laura, Berrie, Eleanor, Berry, Lisa, Berzenyi, Daniella, Beveridge, Amy, Bewley, Kevin R., Bexhell, Helen, Bhikha, Sutika, Bhorat, Asad E., Bhorat, Zaheda E., Bijker, Else, Birch, Geeta, Birch, Sarah, Bird, Adam, Bird, Olivia, Bisnauthsing, Karen, Bittaye, Mustapha, Blackstone, Katherine, Blackwell, Luke, Bletchly, Heather, Blundell, Caitlin L., Blundell, Susannah R., Bodalia, Pritesh, Boettger, Bruno C., Bolam, Emma, Boland, Elena, Bormans, Daan, Borthwick, Nicola, Bowring, Francesca, Boyd, Amy, Bradley, Penny, Brenner, Tanja, Brown, Phillip, Brown, Claire, Brown-O'Sullivan, Charlie, Bruce, Scott, Brunt, Emily, Buchan, Ruaridh, Budd, William, Bulbulia, Yusuf A., Bull, Melanie, Burbage, Jamie, Burhan, Hassan, Burn, Aileen, Buttigieg, Karen R., Byard, Nicholas, Cabera Puig, Ingrid, Calderon, Gloria, Calvert, Anna, Camara, Susana, Cao, Michelangelo, Cappuccini, Federica, Cardoso, João R., Carr, Melanie, Carroll, Miles W., Carson-Stevens, Andrew, Carvalho, Yasmin de M., Carvalho, José A.M., Casey, Helen R., Cashen, Paul, Castro, Thais, Castro, Lucia Carratala, Cathie, Katrina, Cavey, Ana, Cerbino-Neto, José, Chadwick, Jim, Chapman, David, Charlton, Sue, Chelysheva, Irina, Chester, Oliver, Chita, Sunder, Cho, Jee-Sun, Cifuentes, Liliana, Clark, Elizabeth, Clark, Matthew, Clarke, Andrea, Clutterbuck, Elizabeth A., Collins, Sarah L.K., Conlon, Christopher P., Connarty, Sean, Coombes, Naomi, Cooper, Cushla, Cooper, Rachel, Cornelissen, Lynne, Corrah, Tumena, Cosgrove, Catherine, Cox, Tony, Crocker, Wendy E.M., Crosbie, Sarah, Cullen, Lorraine, Cullen, Dan, Cunha, Debora R.M.F., Cunningham, Christina, Cuthbertson, Fiona C., Da Guarda, Suzete N. Farias, da Silva, Larissa P., Damratoski, Brad E., Danos, Zsofia, Dantas, Maria T.D.C., Darroch, Paula, Datoo, Mehreen S., Datta, Chandrabali, Davids, Malika, Davies, Sarah L., Davies, Hannah, Davis, Elizabeth, Davis, Judith, Davis, John, De Nobrega, Maristela M.D., De Oliveira Kalid, Lis Moreno, Dearlove, David, Demissie, Tesfaye, Desai, Amisha, Di Marco, Stefania, Di Maso, Claudio, Dinelli, Maria I.S., Dinesh, Tanya, Docksey, Claire, Dold, Christina, Dong, Tao, Donnellan, Francesca R., Dos Santos, Tannyth, dos Santos, Thainá G., Dos Santos, Erika Pachecho, Douglas, Naomi, Downing, Charlotte, Drake, Jonathan, Drake-Brockman, Rachael, Driver, Kimberley, Drury, Ruth, Dunachie, Susanna J., Durham, Benjamin S., Dutra, Lidiana, Easom, Nicholas J.W., van Eck, Samual, Edwards, Mandy, Edwards, Nick J., El Muhanna, Omar M., Elias, Sean C., Elmore, Mike, English, Marcus, Esmail, Alisgair, Essack, Yakub Moosa, Farmer, Eoghan, Farooq, Mutjaba, Farrar, Madi, Farrugia, Leonard, Faulkner, Beverley, Fedosyuk, Sofiya, Felle, Sally, Feng, Shuo, Ferreira Da Silva, Carla, Field, Samantha, Fisher, Richard, Flaxman, Amy, Fletcher, James, Fofie, Hazel, Fok, Henry, Ford, Karen J., Fowler, Jamie, Fraiman, Pedro H.A., Francis, Emma, Franco, Marilia M., Frater, John, Freire, Marilúcia S.M., Fry, Samantha H., Fudge, Sabrina, Furze, Julie, Fuskova, Michelle, Galian-Rubio, Pablo, Galiza, Eva, Garlant, Harriet, Gavrila, Madita, Geddes, Ailsa, Gibbons, Karyna A., Gilbride, Ciaran, Gill, Hardeep, Glynn, Sharon, Godwin, Kerry, Gokani, Karishma, Goldoni, Ursula Carvalho, Goncalves, Maria, Gonzalez, Isabela G.S., Goodwin, Jayne, Goondiwala, Amina, Gordon-Quayle, Katherine, Gorini, Giacomo, Grab, Janet, Gracie, Lara, Greenland, Melanie, Greenwood, Nicola, Greffrath, Johann, Groenewald, Marisa M., Grossi, Leonardo, Gupta, Gaurav, Hackett, Mark, Hallis, Bassam, Hamaluba, Mainga, Hamilton, Elizabeth, Hamlyn, Joseph, Hammersley, Daniel, Hanrath, Aidan T., Hanumunthadu, Brama, Harris, Stephanie A., Harris, Clair, Harris, Tara, Harrison, Thomas D., Harrison, Daisy, Hart, Thomas C., Hartnell, Birgit, Hassan, Shadin, Haughney, John, Hawkins, Sophia, Hay, Jodie, Head, Ian, Henry, John, Hermosin Herrera, Macarena, Hettle, David B., Hill, Jennifer, Hodges, Gina, Horne, Elizea, Hou, Mimi M., Houlihan, Catherine, Howe, Elizabeth, Howell, Nicola, Humphreys, Jonathan, Humphries, Holly E., Hurley, Katrina, Huson, Claire, Hyder-Wright, Angela, Hyams, Catherine, Ikram, Sabina, Ishwarbhai, Alka, Ivan, Monica, Iveson, Poppy, Iyer, Vidyashankara, Jackson, Frederic, De Jager, Jeanne, Jaumdally, Shameem, Jeffers, Helen, Jesudason, Natasha, Jones, Bryony, Jones, Kathryn, Jones, Elizabeth, Jones, Christopher, Jorge, Marianna Rocha, Jose, Aylin, Joshi, Amar, Júnior, Eduardo A.M.S., Kadziola, Joanne, Kailath, Reshma, Kana, Faeeza, Karampatsas, Konstantinos, Kasanyinga, Mwila, Keen, Jade, Kelly, Elizabeth J., Kelly, Dearbhla M., Kelly, Debbie, Kelly, Sarah, Kerr, David, Kfouri, Renato de Ávila, Khan, Liaquat, Khozoee, Baktash, Kidd, Sarah, Killen, Annabel, Kinch, Jasmin, Kinch, Patrick, King, Lloyd D.W., King, Thomas B., Kingham, Lucy, Klenerman, Paul, Knapper, Francesca, Knight, Julian C., Knott, Daniel, Koleva, Stanislava, Lang, Matilda, Lang, Gail, Larkworthy, Colin W., Larwood, Jessica P.J., Law, Rebecca, Lazarus, Erica M., Leach, Amanda, Lees, Emily A., Lemm, Nana-Marie, Lessa, Alvaro, Leung, Stephanie, Li, Yuanyuan, Lias, Amelia M., Liatsikos, Kostas, Linder, Aline, Lipworth, Samuel, Liu, Shuchang, Liu, Xinxue, Lloyd, Adam, Lloyd, Stephanie, Loew, Lisa, Lopez Ramon, Raquel, Lora, Leandro, Lowthorpe, Vicki, Luz, Kleber, MacDonald, Jonathan C., MacGregor, Gordon, Madhavan, Meera, Mainwaring, David O., Makambwa, Edson, Makinson, Rebecca, Malahleha, Mookho, Malamatsho, Ross, Mallett, Garry, Mansatta, Kushal, Maoko, Takalani, Mapetla, Katlego, Marchevsky, Natalie G., Marinou, Spyridoula, Marlow, Emma, Marques, Gabriela N., Marriott, Paula, Marshall, Richard P., Marshall, Julia L., Martins, Flávia J., Masenya, Masebole, Masilela, Mduduzi, Masters, Shauna K., Mathew, Moncy, Matlebjane, Hosea, Matshidiso, Kedidimetse, Mazur, Olga, Mazzella, Andrea, McCaughan, Hugh, McEwan, Joanne, McGlashan, Joanna, McInroy, Lorna, McIntyre, Zoe, McLenaghan, Daniela, McRobert, Nicky, McSwiggan, Steve, Megson, Clare, Mehdipour, Savviz, Meijs, Wilma, Mendonça, Renata N.Á., Mentzer, Alexander J., Mirtorabi, Neginsadat, Mitton, Celia, Mnyakeni, Sibusiso, Moghaddas, Fiona, Molapo, Kgaogelo, Moloi, Mapule, Moore, Maria, Moraes-Pinto, M. Isabel, Moran, Marni, Morey, Ella, Morgans, Róisín, Morris, Susan, Morris, Sheila, Morris, Helen C., Morselli, Franca, Morshead, Gertraud, Morter, Richard, Mottal, Lynelle, Moultrie, Andrew, Moya, Nathifa, Mpelembue, Mushiya, Msomi, Sibekezelo, Mugodi, Yvonne, Mukhopadhyay, Ekta, Muller, Jilly, Munro, Alasdair, Munro, Claire, Murphy, Sarah, Mweu, Philomena, Myasaki, Celia Hatsuko, Naik, Gurudutt, Naker, Kush, Nastouli, Eleni, Nazir, Abida, Ndlovu, Bongani, Neffa, Fabio, Njenga, Cecilia, Noal, Helena, Noé, Andrés, Novaes, Gabrielle, Nugent, Fay L., Nunes, Géssika, O'Brien, Katie, O'Connor, Daniel, Odam, Miranda, Oelofse, Suzette, Oguti, Blanche, Olchawski, Victoria, Oldfield, Neil J., Oliveira, Marianne G., Oliveira, Catarina, Oosthuizen, Angela, O'Reilly, Paula, Osborne, Piper, Owen, David R.J., Owen, Lydia, Owens, Daniel, Owino, Nelly, Pacurar, Mihaela, Paiva, Brenda V.B., Palhares, Edna M.F., Palmer, Susan, Parkinson, Sivapriyai, Parracho, Helena M.R.T., Parsons, Karen, Patel, Dipak, Patel, Bhumika, Patel, Faeezah, Patel, Kelly, Patrick-Smith, Maia, Payne, Ruth O., Peng, Yanchun, Penn, Elizabeth J., Pennington, Anna, Peralta Alvarez, Marco Polo, Perring, James, Perry, Nicola, Perumal, Rubeshan, Petkar, Sahir, Philip, Tricia, Phillips, Daniel J., Phillips, Jennifer, Phohu, Mary Kgomotso, Pickup, Lorinda, Pieterse, Sonja, Piper, Jo, Pipini, Dimitra, Plank, Mary, Du Plessis, Joan, Pollard, Samuel, Pooley, Jennifer, Pooran, Anil, Poulton, Ian, Powers, Claire, Presa, Fernando B., Price, David A., Price, Vivien, Primeira, Marcelo, Proud, Pamela C., Provstgaard-Morys, Samuel, Pueschel, Sophie, Pulido, David, Quaid, Sheena, Rabara, Ria, Radford, Alexandra, Radia, Kajal, Rajapaska, Durga, Rajeswaran, Thurkka, Ramos, Alberto San Francisco, Ramos Lopez, Fernando, Rampling, Tommy, Rand, Jade, Ratcliffe, Helen, Rawlinson, Tom, Rea, David, Rees, Byron, Reiné, Jesús, Resuello-Dauti, Mila, Reyes Pabon, Emilia, Ribiero, Carla M., Ricamara, Marivic, Richter, Alex, Ritchie, Neil, Ritchie, Adam J., Robbins, Alexander J., Roberts, Hannah, Robinson, Ryan E., Robinson, Hannah, Rocchetti, Talita T., Rocha, Beatriz Pinho, Roche, Sophie, Rollier, Christine, Rose, Louisa, Ross Russell, Amy L., Rossouw, Lindie, Royal, Simon, Rudiansyah, Indra, Ruiz, Sarah, Saich, Stephen, Sala, Claudia, Sale, Jessica, Salman, Ahmed M., Salvador, Natalia, Salvador, Stephannie, Sampaio, Milla, Samson, Annette D., Sanchez-Gonzalez, Amada, Sanders, Helen, Sanders, Katherine, Santos, Erika, Santos Guerra, Mayara F.S., Satti, Iman, Saunders, Jack E., Saunders, Caroline, Sayed, Aakifah, Schim van der Loeff, Ina, Schmid, Annina B., Schofield, Ella, Screaton, Gavin, Seddiqi, Samiullah, Segireddy, Rameswara R., Senger, Roberta, Serrano, Sonia, Shah, Rajiv, Shaik, Imam, Sharpe, Hannah E., Sharrocks, Katherine, Shaw, Robert, Shea, Adam, Shepherd, Amy, Shepherd, James G., Shiham, Farah, Sidhom, Emad, Silk, Sarah E., da Silva Moraes, Antonio Carlos, Silva-Junior, Gilberto, Silva-Reyes, Laura, Silveira, Anderson D., Silveira, Mariana B.V., Sinha, Jaisi, Skelly, Donal T., Smith, Daniel C., Smith, Nick, Smith, Holly E., Smith, David J., Smith, Catherine C., Soares, Airanuédida, Soares, Tiago, Solórzano, Carla, Sorio, Guilherme L., Sorley, Kim, Sosa-Rodriguez, Tiffany, Souza, Cinthia M.C.D.L., Souza, Bruno S.D.F., Souza, Alessandra R., Spencer, Alexandra J., Spina, Fernanda, Spoors, Louise, Stafford, Lizzie, Stamford, Imogen, Starinskij, Igor, Stein, Ricardo, Steven, Jill, Stockdale, Lisa, Stockwell, Lisa V., Strickland, Louise H., Stuart, Arabella C., Sturdy, Ann, Sutton, Natalina, Szigeti, Anna, Tahiri-Alaoui, Abdessamad, Tanner, Rachel, Taoushanis, Carol, Tarr, Alexander W., Taylor, Keja, Taylor, Ursula, Taylor, Iona Jennifer, Taylor, Justin, te Water Naude, Rebecca, Themistocleous, Yrene, Themistocleous, Andreas, Thomas, Merin, Thomas, Kelly, Thomas, Tonia M., Thombrayil, Asha, Thompson, Fawziyah, Thompson, Amber, Thompson, Kevin, Thompson, Ameeka, Thomson, Julia, Thornton-Jones, Viv, Tighe, Patrick J., Tinoco, Lygia Accioly, Tiongson, Gerlynn, Tladinyane, Bonolo, Tomasicchio, Michele, Tomic, Adriana, Tonks, Susan, Towner, James, Tran, Nguyen, Tree, Julia, Trillana, Gerry, Trinham, Charlotte, Trivett, Rose, Truby, Adam, Tsheko, Betty Lebogang, Turabi, Aadil, Turner, Richard, Turner, Cheryl, Ulaszewska, Marta, Underwood, Benjamin R., Varughese, Rachel, Verbart, Dennis, Verheul, Marije, Vichos, Iason, Vieira, Taiane, Waddington, Claire S., Walker, Laura, Wallis, Erica, Wand, Matthew, Warbick, Deborah, Wardell, Theresa, Warimwe, George, Warren, Sarah C., Watkins, Bridget, Watson, Ekaterina, Webb, Stewart, Webb-Bridges, Alice, Webster, Angela, Welch, Jessica, Wells, Jeanette, West, Alison, White, Caroline, White, Rachel, Williams, Paul, Williams, Rachel L., Winslow, Rebecca, Woodyer, Mark, Worth, Andrew T., Wright, Danny, Wroblewska, Marzena, Yao, Andy, Zimmer, Rafael, Zizi, Dalila, Zuidewind, Peter, Voysey, Merryn, Clemens, Sue Ann Costa, Madhi, Shabir A, Weckx, Lily Y, Folegatti, Pedro M, Aley, Parvinder K, Angus, Brian, Baillie, Vicky L, Barnabas, Shaun L, Bhorat, Qasim E, Bibi, Sagida, Briner, Carmen, Cicconi, Paola, Collins, Andrea M, Colin-Jones, Rachel, Cutland, Clare L, Darton, Thomas C, Dheda, Keertan, Duncan, Christopher J A, Emary, Katherine R W, Ewer, Katie J, Fairlie, Lee, Faust, Saul N, Ferreira, Daniela M, Finn, Adam, Goodman, Anna L, Green, Catherine M, Green, Christopher A, Heath, Paul T, Hill, Catherine, Hill, Helen, Hirsch, Ian, Hodgson, Susanne H C, Izu, Alane, Jackson, Susan, Jenkin, Daniel, Joe, Carina C D, Kerridge, Simon, Koen, Anthonet, Kwatra, Gaurav, Lazarus, Rajeka, Lawrie, Alison M, Lelliott, Alice, Libri, Vincenzo, Lillie, Patrick J, Mallory, Raburn, Mendes, Ana V A, Milan, Eveline P, Minassian, Angela M, McGregor, Alastair, Morrison, Hazel, Mujadidi, Yama F, Nana, Anusha, O’Reilly, Peter J, Padayachee, Sherman D, Pittella, Ana, Plested, Emma, Pollock, Katrina M, Ramasamy, Maheshi N, Rhead, Sarah, Schwarzbold, Alexandre V, Singh, Nisha, Smith, Andrew, Song, Rinn, Snape, Matthew D, Sprinz, Eduardo, Sutherland, Rebecca K, Tarrant, Richard, Thomson, Emma C, Török, M Estée, Toshner, Mark, Turner, David P J, Vekemans, Johan, Villafana, Tonya L, Watson, Marion E E, Williams, Christopher J, Douglas, Alexander D, Hill, Adrian V S, Lambe, Teresa, Gilbert, Sarah C, and Pollard, Andrew J

Published
2021
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3. Azithromycin in addition to standard of care versus standard of care alone in the treatment of patients admitted to the hospital with severe COVID-19 in Brazil (COALITION II): a randomised clinical trial

Author

Furtado, Remo H M, Berwanger, Otavio, Fonseca, Henrique A, Corrêa, Thiago D, Ferraz, Leonardo R, Lapa, Maura G, Zampieri, Fernando G, Veiga, Viviane C, Azevedo, Luciano C P, Rosa, Regis G, Lopes, Renato D, Avezum, Alvaro, Manoel, Airton L O, Piza, Felipe M T, Martins, Priscilla A, Lisboa, Thiago C, Pereira, Adriano J, Olivato, Guilherme B, Dantas, Vicente C S, Milan, Eveline P, Gebara, Otavio C E, Amazonas, Roberto B, Oliveira, Monalisa B, Soares, Ronaldo V P, Moia, Diogo D F, Piano, Luciana P A, Castilho, Kleber, Momesso, Roberta G R A P, Schettino, Guilherme P P, Rizzo, Luiz Vicente, Neto, Ary Serpa, Machado, Flávia R, and Cavalcanti, Alexandre B

Published
2020
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5. Single Dose Administration, And The Influence Of The Timing Of The Booster Dose On Immunogenicity and Efficacy Of ChAdOx1 nCoV-19 (AZD1222) Vaccine

Author

Voysey, Merryn, Costa Clemens, Sue Ann, Madhi, Shabir A, Weckx, Lily Yin, Folegatti, Pedro M, Aley, Parvinder K, Angus, Brian John, Baillie, Vicky, Barnabas, Shaun L, Bhorat, Qasim E, Bibi, Sagida, Briner, Carmen, Cicconi, Paola, Clutterbuck, Elizabeth, Collins, Andrea M, Cutland, Clare, Darton, Thomas, Dheda, Keertan, Douglas, Alexander D, Duncan, Christopher JA, Emary, Katherine RW, Ewer, Katie, Flaxman, Amy, Fairlie, Lee, Faust, Saul N, Feng, Shuo, Ferreira, Daniela M, Finn, Adam, Galiza, Eva, Goodman, Anna L, Green, Catherine M, Green, Christopher A, Greenland, Melanie, Hill, Catherine, Hill, Helen C, Hirsch, Ian, Izu, Alane, Jenkin, Daniel, Kerridge, Simon, Koen, Anthonet, Kwatra, Gaurav, Lazarus, Rajeka, Libri, Vincenzo, Lillie, Patrick J, Marchevsky, Natalie, Marshall, Richard P, Mendes, Ana Verena Almeida, Milan, Eveline P, Minassian, Angela M, McGregor, Alastair C, Farooq Mujadidi, Yama, Nana, Anusha, Payadachee, Sherman D, Phillips, Daniel J, Pittella, Ana, Plested, Emma, Pollock, Katrina M, Ramasamy, Maheshi N, Robinson, Hannah, Schwarzbold, Alexandre V, Smith, Andrew, Song, Rinn, Snape, Matthew D, Sprinz, Eduardo, Sutherland, Rebecca K, Thomson, Emma C, Török, Mili Estée, Toshner, Mark, Turner, David PJ, Vekemans, Johan, Villafana, Tonya L, White, Thomas, Williams, Christopher J, Hill, Adrian VS, Lambe, Teresa, Gilbert, Sarah C, Pollard, Andrew, and Group, Oxford COVID Vaccine Trial

Published
2022
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7. Single-dose administration and the influence of the timing of the booster dose on immunogenicity and efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine: a pooled analysis of four randomised trials

Author

Voysey, Merryn, Costa Clemens, Sue Ann, Madhi, Shabir A, Weckx, Lily Y, Folegatti, Pedro M, Aley, Parvinder K, Angus, Brian, Baillie, Vicky L, Barnabas, Shaun L, Bhorat, Qasim E, Bibi, Sagida, Briner, Carmen, Cicconi, Paola, Clutterbuck, Elizabeth A, Collins, Andrea M, Cutland, Clare L, Darton, Thomas C, Dheda, Keertan, Dold, Christina, Duncan, Christopher JA, Emary, Katherine RW, Ewer, Katie J, Flaxman, Amy, Fairlie, Lee, Faust, Saul N, Feng, Shuo, Ferreira, Daniela M, Finn, Adam, Galiza, Eva, Goodman, Anna L, Green, Catherine M, Green, Christopher A, Greenland, Melanie, Hill, Catherine, Hill, Helen C, Hirsch, Ian, Izu, Alane, Jenkin, Daniel, Joe, Carina CD, Kerridge, Simon, Koen, Anthonet, Kwatra, Gaurav, Lazarus, Rajeka, Libri, Vincenzo, Lillie, Patrick J, Marchevsky, Natalie G, Marshall, Richard P, Mendes, Ana VA, Milan, Eveline P, Minassian, Angela M, McGregor, Alastair, Mujadidi, Yama F, Nana, Anusha, Padayachee, Sherman D, Phillips, Daniel J, Pittella, Ana, Plested, Emma, Pollock, Katrina M, Ramasamy, Maheshi N, Ritchie, Adam J, Robinson, Hannah, Schwarzbold, Alexandre V, Smith, Andrew, Song, Rinn, Snape, Matthew D, Sprinz, Eduardo, Sutherland, Rebecca K, Thomson, Emma C, Török, M Estée, Toshner, Mark, Turner, David PJ, Vekemans, Johan, Villafana, Tonya L, White, Thomas, Williams, Christopher J, Douglas, Alexander D, Hill, Adrian VS, Lambe, Teresa, Gilbert, Sarah C, Pollard, Andrew J, and Oxford COVID Vaccine Trial Group

Abstract

Background\ud The ChAdOx1 nCoV-19 (AZD1222) vaccine has been approved for emergency use by the UK regulatory authority, Medicines and Healthcare products Regulatory Agency, with a regimen of two standard doses given with an interval of 4-12 weeks. The planned roll-out in the UK will involve vaccinating people in high-risk categories with their first dose immediately, and delivering the second dose 12 weeks later. Here, we provide both a further prespecified pooled analysis of trials of ChAdOx1 nCoV-19 and exploratory analyses of the impact on immunogenicity and efficacy of extending the interval between priming and booster doses. In addition, we show the immunogenicity and protection afforded by the first dose, before a booster dose has been offered.MethodsWe present data from three single-blind randomised controlled trials-one phase 1/2 study in the UK (COV001), one phase 2/3 study in the UK (COV002), and a phase 3 study in Brazil (COV003)-and one double-blind phase 1/2 study in South Africa (COV005). As previously described, individuals 18 years and older were randomly assigned 1:1 to receive two standard doses of ChAdOx1 nCoV-19 (5 × 1010 viral particles) or a control vaccine or saline placebo. In the UK trial, a subset of participants received a lower dose (2·2 × 1010 viral particles) of the ChAdOx1 nCoV-19 for the first dose. The primary outcome was virologically confirmed symptomatic COVID-19 disease, defined as a nucleic acid amplification test (NAAT)-positive swab combined with at least one qualifying symptom (fever ≥37·8°C, cough, shortness of breath, or anosmia or ageusia) more than 14 days after the second dose. Secondary efficacy analyses included cases occuring at least 22 days after the first dose. Antibody responses measured by immunoassay and by pseudovirus neutralisation were exploratory outcomes. All cases of COVID-19 with a NAAT-positive swab were adjudicated for inclusion in the analysis by a masked independent endpoint review committee. The primary analysis included all participants who were SARS-CoV-2 N protein seronegative at baseline, had had at least 14 days of follow-up after the second dose, and had no evidence of previous SARS-CoV-2 infection from NAAT swabs. Safety was assessed in all participants who received at least one dose. The four trials are registered at ISRCTN89951424 (COV003) and ClinicalTrials.gov, NCT04324606 (COV001), NCT04400838 (COV002), and NCT04444674 (COV005).FindingsBetween April 23 and Dec 6, 2020, 24 422 participants were recruited and vaccinated across the four studies, of whom 17 178 were included in the primary analysis (8597 receiving ChAdOx1 nCoV-19 and 8581 receiving control vaccine). The data cutoff for these analyses was Dec 7, 2020. 332 NAAT-positive infections met the primary endpoint of symptomatic infection more than 14 days after the second dose. Overall vaccine efficacy more than 14 days after the second dose was 66·7% (95% CI 57·4-74·0), with 84 (1·0%) cases in the 8597 participants in the ChAdOx1 nCoV-19 group and 248 (2·9%) in the 8581 participants in the control group. There were no hospital admissions for COVID-19 in the ChAdOx1 nCoV-19 group after the initial 21-day exclusion period, and 15 in the control group. 108 (0·9%) of 12 282 participants in the ChAdOx1 nCoV-19 group and 127 (1·1%) of 11 962 participants in the control group had serious adverse events. There were seven deaths considered unrelated to vaccination (two in the ChAdOx1 nCov-19 group and five in the control group), including one COVID-19-related death in one participant in the control group. Exploratory analyses showed that vaccine efficacy after a single standard dose of vaccine from day 22 to day 90 after vaccination was 76·0% (59·3-85·9). Our modelling analysis indicated that protection did not wane during this initial 3-month period. Similarly, antibody levels were maintained during this period with minimal waning by day 90 (geometric mean ratio [GMR] 0·66 [95% CI 0·59-0·74]). In the participants who received two standard doses, after the second dose, efficacy was higher in those with a longer prime-boost interval (vaccine efficacy 81·3% [95% CI 60·3-91·2] at ≥12 weeks) than in those with a short interval (vaccine efficacy 55·1% [33·0-69·9] at InterpretationThe results of this primary analysis of two doses of ChAdOx1 nCoV-19 were consistent with those seen in the interim analysis of the trials and confirm that the vaccine is efficacious, with results varying by dose interval in exploratory analyses. A 3-month dose interval might have advantages over a programme with a short dose interval for roll-out of a pandemic vaccine to protect the largest number of individuals in the population as early as possible when supplies are scarce, while also improving protection after receiving a second dose.FundingUK Research and Innovation, National Institutes of Health Research (NIHR), The Coalition for Epidemic Preparedness Innovations, the Bill & Melinda Gates Foundation, the Lemann Foundation, Rede D'Or, the Brava and Telles Foundation, NIHR Oxford Biomedical Research Centre, Thames Valley and South Midland's NIHR Clinical Research Network, and AstraZeneca.

Published
2021

8. Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK

Author

Voysey, Merryn, Clemens, Sue Ann Costa, Madhi, Shabir A., Weckx, Lily Y., Folegatti, Pedro M., Aley, Parvinder K., Angus, Brian, Baillie, Vicky L., Barnabas, Shaun L., Bhorat, Qasim E., Bibi, Sagida, Briner, Carmen, Cicconi, Paola, Collins, Andrea M., Colin-Jones, Rachel, Cutland, Clare L., Darton, Thomas C., Dheda, Keertan, Duncan, Christopher J. A., Emary, Katherine R. W., Ewer, Katie J., Fairlie, Lee, Faust, Saul N., Feng, Shuo, Ferreira, Daniela M., Finn, Adam, Goodman, Anna L., Green, Catherine M., Green, Christopher A., Heath, Paul T., Hill, Catherine, Hill, Helen, Hirsch, Ian, Hodgson, Susanne H. C., Izu, Alane, Jackson, Susan, Jenkin, Daniel, Joe, Carina C. D., Kerridge, Simon, Koen, Anthonet, Kwatra, Gaurav, Lazarus, Rajeka, Lawrie, Alison M., Lelliott, Alice, Libri, Vincenzo, Lillie, Patrick J., Mallory, Raburn, Mendes, Ana V. A., Milan, Eveline P., Minassian, Angela M., McGregor, Alastair, Morrison, Hazel, Mujadidi, Yama F., Nana, Anusha, O'Reilly, Peter J., Padayachee, Sherman D., Pittella, Ana, Plested, Emma, Pollock, Katrina M., Ramasamy, Maheshi N., Rhead, Sarah, Schwarzbold, Alexandre V., Singh, Nisha, Smith, Andrew, Song, Rinn, Snape, Matthew D., Sprinz, Eduardo, Sutherland, Rebecca K., Tarrant, Richard, Thomson, Emma C., Török, Mark and Turner, Sorio, Guilherme L., Sorley, Kim, Sosa-Rodriguez, Tiffany, Souza, Cinthia M.C.D.L., Souza, Bruno S.D.F., Souza, Alessandra R., Spencer, Alexandra J., Spina, Fernanda, Spoors, Louise, Stafford, Lizzie, Stamford, Imogen, Starinskij, Igor, Stein, Ricardo, Steven, Jill, Stockdale, Lisa, Stockwell, Lisa V., Strickland, Louise H., Stuart, Arabella C., Sturdy, Ann, Sutton, Natalina, Szigeti, Anna, Tahiri-Alaoui, Abdessamad, Tanner, Rachel, Taoushanis, Carol, Tarr, Alexander W., Taylor, Keja, Taylor, Ursula, Taylor, Iona Jennifer, Taylor, Justin, te Water Naude, Rebecca, Themistocleous, Yrene, Themistocleous, Andreas, Thomas, Merin, Thomas, Kelly, Thomas, Tonia M., Thombrayil, Asha, Thompson, Fawziyah, Thompson, Amber, Thompson, Kevin, Thompson, Ameeka, Thomson, Julia, Thornton-Jones, Viv, Tighe, Patrick J., Tinoco, Lygia Accioly, Tiongson, Gerlynn, Tladinyane, Bonolo, Tomasicchio, Michele, Tomic, Adriana, Tonks, Susan, Tran, Nguyen, Tree, Julia, Trillana, Gerry, Trinham, Charlotte, Trivett, Rose, Truby, Adam, Tsheko, Betty Lebogang, Turabi, Aadil, Turner, Richard, Turner, Cheryl, Ulaszewska, Marta, Underwood, Benjamin R., Varughese, Rachel, Verbart, Dennis, Verheul, Marije, Vichos, Iason, Vieira, Taiane, Waddington, Claire S., Walker, Laura, Wallis, Erica, Wand, Matthew, Warbick, Deborah, Wardell, Theresa, Warimwe, George, Warren, Sarah C., Watkins, Bridget, Watson, Ekaterina, Webb, Stewart, Webb-Bridges, Alice, Webster, Angela, Welch, Jessica, Wells, Jeanette, West, Alison, White, Caroline, White, Rachel, Williams, Paul, Williams, Rachel L., Winslow, Rebecca, Woodyer, Mark, Worth, Andrew T., Wright, Danny, Wroblewska, Marzena, Yao, Andy, Zimmer, Rafael, Zizi, Dalila, and Zuidewind, Peter

Abstract

Background: \ud A safe and efficacious vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), if deployed with high coverage, could contribute to the control of the COVID-19 pandemic. We evaluated the safety and efficacy of the ChAdOx1 nCoV-19 vaccine in a pooled interim analysis of four trials.\ud \ud Methods: \ud This analysis includes data from four ongoing blinded, randomised, controlled trials done across the UK, Brazil, and South Africa. Participants aged 18 years and older were randomly assigned (1:1) to ChAdOx1 nCoV-19 vaccine or control (meningococcal group A, C, W, and Y conjugate vaccine or saline). Participants in the ChAdOx1 nCoV-19 group received two doses containing 5 × 1010 viral particles (standard dose; SD/SD cohort); a subset in the UK trial received a half dose as their first dose (low dose) and a standard dose as their second dose (LD/SD cohort). The primary efficacy analysis included symptomatic COVID-19 in seronegative participants with a nucleic acid amplification test-positive swab more than 14 days after a second dose of vaccine. Participants were analysed according to treatment received, with data cutoff on Nov 4, 2020. Vaccine efficacy was calculated as 1 - relative risk derived from a robust Poisson regression model adjusted for age. Studies are registered at ISRCTN89951424 and ClinicalTrials.gov, NCT04324606, NCT04400838, and NCT04444674.\ud \ud Findings: \ud Between April 23 and Nov 4, 2020, 23 848 participants were enrolled and 11 636 participants (7548 in the UK, 4088 in Brazil) were included in the interim primary efficacy analysis. In participants who received two standard doses, vaccine efficacy was 62·1% (95% CI 41·0–75·7; 27 [0·6%] of 4440 in the ChAdOx1 nCoV-19 group vs71 [1·6%] of 4455 in the control group) and in participants who received a low dose followed by a standard dose, efficacy was 90·0% (67·4–97·0; three [0·2%] of 1367 vs 30 [2·2%] of 1374; pinteraction=0·010). Overall vaccine efficacy across both groups was 70·4% (95·8% CI 54·8–80·6; 30 [0·5%] of 5807 vs 101 [1·7%] of 5829). From 21 days after the first dose, there were ten cases hospitalised for COVID-19, all in the control arm; two were classified as severe COVID-19, including one death. There were 74 341 person-months of safety follow-up (median 3·4 months, IQR 1·3–4·8): 175 severe adverse events occurred in 168 participants, 84 events in the ChAdOx1 nCoV-19 group and 91 in the control group. Three events were classified as possibly related to a vaccine: one in the ChAdOx1 nCoV-19 group, one in the control group, and one in a participant who remains masked to group allocation.\ud \ud Interpretation: \ud ChAdOx1 nCoV-19 has an acceptable safety profile and has been found to be efficacious against symptomatic COVID-19 in this interim analysis of ongoing clinical trials.\ud \ud Funding: \ud UK Research and Innovation, National Institutes for Health Research (NIHR), Coalition for Epidemic Preparedness Innovations, Bill & Melinda Gates Foundation, Lemann Foundation, Rede D’Or, Brava and Telles Foundation, NIHR Oxford Biomedical Research Centre, Thames Valley and South Midland's NIHR Clinical Research Network, and AstraZeneca.

Published
2021

10. Single Dose Administration, And The Influence Of The Timing Of The Booster Dose On Immunogenicity and Efficacy Of ChAdOx1 nCoV-19 (AZD1222) Vaccine

Author

Voysey, Merryn, primary, Costa Clemens, Sue Ann, additional, Madhi, Shabir A., additional, Weckx, Lily Yin, additional, Folegatti, Pedro M., additional, Aley, Parvinder K., additional, Angus, Brian John, additional, Baillie, Vicky, additional, Barnabas, Shaun L., additional, Bhorat, Qasim E., additional, Bibi, Sagida, additional, Briner, Carmen, additional, Cicconi, Paola, additional, Clutterbuck, Elizabeth, additional, Collins, Andrea M., additional, Cutland, Clare, additional, Darton, Thomas, additional, Dheda, Keertan, additional, Douglas, Alexander D., additional, Duncan, Christopher J. A., additional, Emary, Katherine R. W., additional, Ewer, Katie, additional, Flaxman, Amy, additional, Fairlie, Lee, additional, Faust, Saul N., additional, Feng, Shuo, additional, Ferreira, Daniela M., additional, Finn, Adam, additional, Galiza, Eva, additional, Goodman, Anna L., additional, Green, Catherine M., additional, Green, Christopher A., additional, Greenland, Melanie, additional, Hill, Catherine, additional, Hill, Helen C., additional, Hirsch, Ian, additional, Izu, Alane, additional, Jenkin, Daniel, additional, Kerridge, Simon, additional, Koen, Anthonet, additional, Kwatra, Gaurav, additional, Lazarus, Rajeka, additional, Libri, Vincenzo, additional, Lillie, Patrick J., additional, Marchevsky, Natalie G., additional, Marshall, Richard P., additional, Mendes, Ana Verena Almeida, additional, Milan, Eveline P., additional, Minassian, Angela M., additional, McGregor, Alastair C., additional, Farooq Mujadidi, Yama, additional, Nana, Anusha, additional, Payadachee, Sherman D., additional, Phillips, Daniel J., additional, Pittella, Ana, additional, Plested, Emma, additional, Pollock, Katrina M., additional, Ramasamy, Maheshi N., additional, Robinson, Hannah, additional, Schwarzbold, Alexandre V., additional, Smith, Andrew, additional, Song, Rinn, additional, Snape, Matthew D., additional, Sprinz, Eduardo, additional, Sutherland, Rebecca K., additional, Thomson, Emma C., additional, Torok, Mili, additional, Toshner, Mark, additional, Turner, David P. J., additional, Vekemans, Johan, additional, Villafana, Tonya L., additional, White, Thomas, additional, Williams, Christopher J., additional, Hill, Adrian V. S., additional, Lambe, Teresa, additional, Gilbert, Sarah C., additional, Pollard, Andrew, additional, and Group, Oxford COVID Vaccine Trial, additional

Published
2021
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11. Hydroxychloroquine with or without Azithromycin in Mild-to-Moderate Covid-19

Author

Cavalcanti, Alexandre B., primary, Zampieri, Fernando G., additional, Rosa, Regis G., additional, Azevedo, Luciano C.P., additional, Veiga, Viviane C., additional, Avezum, Alvaro, additional, Damiani, Lucas P., additional, Marcadenti, Aline, additional, Kawano-Dourado, Letícia, additional, Lisboa, Thiago, additional, Junqueira, Debora L. M., additional, de Barros e Silva, Pedro G.M., additional, Tramujas, Lucas, additional, Abreu-Silva, Erlon O., additional, Laranjeira, Ligia N., additional, Soares, Aline T., additional, Echenique, Leandro S., additional, Pereira, Adriano J., additional, Freitas, Flávio G.R., additional, Gebara, Otávio C.E., additional, Dantas, Vicente C.S., additional, Furtado, Remo H.M., additional, Milan, Eveline P., additional, Golin, Nicole A., additional, Cardoso, Fábio F., additional, Maia, Israel S., additional, Hoffmann Filho, Conrado R., additional, Kormann, Adrian P.M., additional, Amazonas, Roberto B., additional, Bocchi de Oliveira, Monalisa F., additional, Serpa-Neto, Ary, additional, Falavigna, Maicon, additional, Lopes, Renato D., additional, Machado, Flávia R., additional, and Berwanger, Otavio, additional

Published
2020
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13. Effect of the Ethyl Acetate Fraction of Eugenia uniflora on Proteins Global Expression during Morphogenesis in Candida albicans

Author

Silva-Rocha, Walicyranison P., primary, de Azevedo, Matheus F., additional, Ferreira, Magda R. A., additional, da Silva, Julhiany de Fátima, additional, Svidzinski, Terezinha I. E., additional, Milan, Eveline P., additional, Soares, Luiz A. L., additional, Rocha, Keyla B. F., additional, Uchôa, Adriana F., additional, Mendes-Giannini, Maria J. S., additional, Fusco Almeida, Ana M., additional, and Chaves, Guilherme M., additional

Published
2017
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14. Interchangeability of different COVID-19 vaccine platforms as booster doses: A phase 3 study mimicking real-world practice.

Author

Ann Costa Clemens, Sue, Weckx, Lily, Milan, Eveline P., Smolenov, Igor, and Clemens, Ralf

Subjects
*BOOSTER vaccines, *SARS-CoV-2 Omicron variant, *COVID-19 vaccines, *SARS-CoV-2, *RECOMBINANT proteins, *VIRUS-like particles
Abstract

• Booster vaccinations are necessary to protect against emerging SARS-CoV-2 variants. • We tested three vaccine platforms, mRNA, adenovirus-vector and recombinant protein. • Using different vaccine platforms did not affect booster safety or immunogenicity. • All three vaccines increased immunity against Omicron BF.7, BQ.1.1.3, and XBB.1.5.6. • Fold-increases were similar for ancestor and Omicron variants within a platform. The COVID-19 pandemic is over but the highly immunized or naturally exposed global population still requires booster vaccinations against newly emerging SARS-CoV-2 variants. We assessed safety and immunogenicity of booster doses of COVID-19 vaccines based on three different platforms in a setting that mimics the current routine practice in Brazil. In this phase 3 study from 14 February 2023 to 12 June 2023 we enrolled previously immunized adults to receive an additional booster dose of one of three vaccines. Immunogenicity against ancestor SARS-CoV-2 and Omicron BF.7, BQ.1.1.3, and XBB.1.5.6 sub-lineages was measured as ELISA IgG or virus neutralizing (VNT) antibodies and safety/reactogenicity assessed using diary cards. Volunteers with a history of full primary COVID-19 immunization striated to three cohorts according to their previous booster vaccination history—0 (n = 26), 1 (n = 140) or 2 (n = 606) booster vaccinations—were randomized 2:1:1 to receive either recombinant protein (SCB-2019, Clover), adenovirus-vector (ChAdOx1-S, AstraZeneca/Fiocruz), or mRNA (BNT162b2, Pfizer/Wyeth). Baseline antibody titers were higher in individuals who had received one or two boosters and titers against both ancestor and Omicron sub-lineages increased in all groups regardless of the number of previous booster doses or the vaccine used. Day 28 geometric mean titers (GMTs) and geometric mean-fold rises (GMFR) against all variants were higher after BNT162b than SCB-2019 or ChAdOx1-S, but BNT162b groups displayed more rapid antibody waning at Day 84. Within cohorts each vaccine elicited similar GMFR against the different SARS-CoV-2 strains. All vaccines were well tolerated with similar solicited reactogenicity profiles. Protein, adenovirus-vector or mRNA vaccine boosters were equally well tolerated and immunogenic against ancestor SARS-CoV-2 and Omicron sub-lineages in fully primed adults with 0–2 prior boosters. BNT162b induced the highest immune responses but also the most rapid waning of antibodies 3 months after vaccination. Clinical Trial Registration: ClinicalTrials.gov , identifier NCT05812586. [ABSTRACT FROM AUTHOR]

Published
2024
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15. Immunogenicity, safety and reactogenicity of heterologous (third dose) booster vaccination with a full or fractional dose of two different COVID-19 vaccines: A phase 4, single-blind, randomized controlled trial in adults

Author

Costa Clemens, Sue Ann, Marchevsky, Natalie, Kelly, Sarah, Felle, Sally, Eldawi, Ahmed, Rajasingam, Rupetha, Mahmud, Rawan, Lambe, Teresa, Voysey, Merryn, Gonzalez, Isabela, Milan, Eveline Pipolo, Justino, Maria Cleonice, Bibi, Sagida, Aley, Parvinder, Clemens, Ralf, and Pollard, Andrew J.

Abstract

ABSTRACTIn this phase 4 study we assessed boosting with fractional doses of heterologous COVID-19 vaccines in Brazilian adults primed with two doses of CoronaVac (Sinovac/Butantan, São Paulo, Brazil) at least 4 months previously. Participants received either full-dose of ChAdOx1-S (Group 1, n = 232), a half dose of ChAdOx1-S (Group 2, n = 236), or a half dose of BNT162b2 (Group 3, n = 234). The primary objective was to show 80% seroresponse rates (SRR) 28 d after vaccination measured as IgG antibodies against a prototype SARS-CoV-2 spike-protein. Safety was assessed as solicited and unsolicited adverse events. At baseline all participants were seropositive, with high IgG titers overall. SRR at Day 28 were 34.3%, 27.1% and 71.2%, respectively, not meeting the primary objective of 80%, despite robust immune responses in all three groups with geometric mean-fold rise (GMFR) in IgG titers of 3.39, 2.99 and 7.42, respectively. IgG immune responses with similar GMFR were also observed against SARS-CoV-2 variants, Alpha, Beta, Delta, Gamma and D614G. In subsets (n = 35) of participants GMFR of neutralizing immune responses against live prototype SARS-CoV-2 virus and Omicron BA.2 were similar to the IgG responses as were pseudo-neutralizing responses against SARS-CoV-2 prototype and Omicron BA.4/5 variants. All vaccinations were well tolerated with no vaccine-related serious adverse events and mainly transient mild-to-moderate local and systemic reactogenicity. Heterologous boosting with full or half doses of ChAdOx1-S or a half dose of BNT162b2 was safe and immunogenic in CoronaVac-primed adults, but seroresponse rates were limited by high baseline immunity.

Published
2023
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17. Attenuated total reflection Fourier transform-infrared (ATR-FTIR) spectroscopy as a new technology for discrimination between Cryptococcus neoformansand Cryptococcus gattii

Author

Costa, Fernanda S. L., Silva, Priscila P., Morais, Camilo L. M., Arantes, Thales D., Milan, Eveline Pipolo, Theodoro, Raquel C., and Lima, Kássio M. G.

Abstract

Systemic fungal infections are among the most difficult diseases to manage in humans, especially when the recognition of the correct species is required for a precise and successful treatment. This is the case for Cryptococcusspecies and its genotypes, which are the main cause of meningitides in immunocompromised patients. Attenuated total reflection Fourier transform-infrared (ATR-FTIR) spectroscopy with discriminant analysis was employed to distinguish between the pathogenic fungal species Cryptococcus neoformansand Cryptococcus gattiiby determining which wavenumber–absorbance/intensity relationships might reveal biochemical differences. Cryptococcusinactivated colonies were applied to an ATR crystal, and vibrational spectra were obtained in the ATR mode. Twenty-eight Cryptococcusisolates, fourteen C. neoformansand fourteen C. gattiiwere investigated. Spectral categories were analyzed using principal component analysis (PCA), successive projection algorithm (SPA) and genetic algorithm (GA) followed by linear discriminant analysis (LDA) and quadratic discriminant analysis (QDA). Multivariate classification accuracy results were estimated based on sensitivity, specificity, positive (or precision) and negative predictive values, Youden index, and positive and negative likelihood ratios. Sensitivity for C. neoformansand C. gattiicategories were 84.4% and 89.3%, respectively, using a QDA-LDA model with 17 wavenumbers with respect to their “fingerprints”. Compared to classical methods for differentiation of Cryptococcusspecies, this new technology could represent an alternative and innovative tool for faster and cheaper fungal identification for routine diagnostic laboratories.

Published
2016
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18. Lenzilumab in hospitalised patients with COVID-19 pneumonia (LIVE-AIR): a phase 3, randomised, placebo-controlled trial

Author

Temesgen, Zelalem, Burger, Charles D, Baker, Jason, Polk, Christopher, Libertin, Claudia R, Kelley, Colleen F, Marconi, Vincent C, Orenstein, Robert, Catterson, Victoria M, Aronstein, William S, Durrant, Cameron, Chappell, Dale, Ahmed, Omar, Chappell, Gabrielle, Badley, Andrew D, Lewis, Meghan, Sher, Linda, Bowdish, Michael, Wald-Dickler, Noah, Biswas, Subarna, Lam, Lydia, Vo, Khang, Poblete, Roy, Lee, May M., Hutcheon, Douglass, Patron, Roberto, Gharbin, John, Moran, Caitlin, Kandiah, Sheetal, Cantos, Valeria, Rebolledo, Paulina, del Rio, Carlos, Lennox, Jeffrey, Polito, Carmen, Sheth, Anandi, Patel, Anup, Paniagua, Homero, Yohannes, Seife, Amin, Alpesh, Lee, Richard, Watanabe, Miki, Hsieh, Lanny, Cearras, Martin, Parikh, Amay, Sniffen, Jason, Onyia, Wilfred, Boger, Michael, Davidson, Lisa, Gajurel, Kiran, Leonard, Michael, McCurdy, Lewis, Quezada, Nestor, Sampson, Mindy, Shahid, Zainab, Strollo, Stephanie, Weinrib, David, Zulfigar, Sara, McDonald, Cheryl, Hollingsworth, John, Burk, John, Berg, Joshua, Barbaro, Daniel, Miller, Andrew, Sambathkumar, Lakshmi, McDonald, Stuart, Okoye, Obinna, Pulido, Juan, Fulton, Jennifer, Gill, William, Zuckerman, Richard, Lewis, Lionel, Mandapakala, Chaitanya, Robinson, Matthew, Metzger, Brian, Alam, Maqsood, Politis, Chrisoula, Frosch, Anne, Ngo, Linh, Carvalho Neuenschwander, Fernando, Figueiredo, EstevÃo, CanÇado, Gualter, Araujo, Gustavo, GuimarÃes, Lucas, Diaz, Ricardo, Bacellar, Natalia, Silva, Celso, Ferreira, Paulo, Andrade Lima, Marina, Uber Ghisi, Caroline, Anton, Camila, Albaneze, Ricardo, Wagner de Castro Lima Santos, Daniel, Iglessias, Ana Caroline, Lago, Marianna, Pietrobom, Paula, Alves, Maysa, Duailibe Furtado, Juvencio José, Trevelin, Leopoldo, Telles, Valeria, Correa, Francini, Ramos, Fabiano, de A. R. Da Silva, Marina, Lacerda Garcia, Rebeca C., Maldonado, Ana Elizabeth G., Beheregaray, Ana Carolina M., Ortiz, Ana Maria T., Luz, Kleber, Pipolo Milan, Eveline, Soares de Castro, Janine, Barbosa Moreira, Matheus José, Bezerra Onofre, Renata, do Nascimento JÁcome, TÁcito, Barreto Garcia, Victor, Rolim de Souzafrom, Victor Matheus, Dal Pizzol, Felipe, Ritter, Cristiane, Vinhas, Marcelo B., Westheimer Cavalcante, Adilson Joaquim, Minghini, Julia, Dorigo, Loni, Salgado Miranda, Marina, Antila, Martti Anton, Brugnolli, Rebeca, and Antila, Henrikki

Abstract

The pathophysiology of COVID-19 includes immune-mediated hyperinflammation, which could potentially lead to respiratory failure and death. Granulocyte-macrophage colony-stimulating factor (GM-CSF) is among cytokines that contribute to the inflammatory processes. Lenzilumab, a GM-CSF neutralising monoclonal antibody, was investigated in the LIVE-AIR trial to assess its efficacy and safety in treating COVID-19 beyond available treatments.

Published
2021
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19. Single Dose Administration, And The Influence Of The Timing Of The Booster Dose On Immunogenicity and Efficacy Of ChAdOx1 nCoV-19 (AZD1222) Vaccine

Author

Voysey, Merryn, Costa Clemens, Sue Ann, Madhi, Shabir A, Weckx, Lily Yin, Folegatti, Pedro M, Aley, Parvinder K, Angus, Brian John, Baillie, Vicky, Barnabas, Shaun L, Bhorat, Qasim E, Bibi, Sagida, Briner, Carmen, Cicconi, Paola, Clutterbuck, Elizabeth, Collins, Andrea M, Cutland, Clare, Darton, Thomas, Dheda, Keertan, Douglas, Alexander D, Duncan, Christopher JA, Emary, Katherine RW, Ewer, Katie, Flaxman, Amy, Fairlie, Lee, Faust, Saul N, Feng, Shuo, Ferreira, Daniela M, Finn, Adam, Galiza, Eva, Goodman, Anna L, Green, Catherine M, Green, Christopher A, Greenland, Melanie, Hill, Catherine, Hill, Helen C, Hirsch, Ian, Izu, Alane, Jenkin, Daniel, Kerridge, Simon, Koen, Anthonet, Kwatra, Gaurav, Lazarus, Rajeka, Libri, Vincenzo, Lillie, Patrick J, Marchevsky, Natalie, Marshall, Richard P, Mendes, Ana Verena Almeida, Milan, Eveline P, Minassian, Angela M, McGregor, Alastair C, Farooq Mujadidi, Yama, Nana, Anusha, Payadachee, Sherman D, Phillips, Daniel J, Pittella, Ana, Plested, Emma, Pollock, Katrina M, Ramasamy, Maheshi N, Robinson, Hannah, Schwarzbold, Alexandre V, Smith, Andrew, Song, Rinn, Snape, Matthew D, Sprinz, Eduardo, Sutherland, Rebecca K, Thomson, Emma C, Török, Mili Estée, Toshner, Mark, Turner, David PJ, Vekemans, Johan, Villafana, Tonya L, White, Thomas, Williams, Christopher J, Hill, Adrian VS, Lambe, Teresa, Gilbert, Sarah C, Pollard, Andrew, Group, Oxford COVID Vaccine Trial, Toshner, Mark [0000-0002-3969-6143], and Apollo - University of Cambridge Repository

20. Influence of Eugenia uniflora Extract on Adhesion to Human Buccal Epithelial Cells, Biofilm Formation, and Cell Surface Hydrophobicity of Candida spp. from the Oral Cavity of Kidney Transplant Recipients.

Author

Souza, Luanda B. F. C., Silva-Rocha, Walicyranison P., Ferreira, Magda R. A., Soares, Luiz Alberto L., Svidzinski, Terezinha I. E., Milan, Eveline P., Pires, Regina H., Fusco Almeida, Ana Marisa, Mendes-Giannini, Maria José S., Maranhão Chaves, Guilherme, and Epifano, Francesco

Subjects
EUGENIA, EPITHELIAL cells, CELL membranes, CELL adhesion, BIOFILMS, MICROBIAL virulence, ANTIFUNGAL agents
Abstract

This study evaluated the influence of the extract of Eugenia uniflora in adhesion to human buccal epithelial cells (HBEC) biofilm formation and cell surface hydrophobicity (CSH) of Candida spp. isolated from the oral cavity of kidney transplant patients. To evaluate virulence attributes in vitro, nine yeasts were grown in the presence and absence of 1000 μg/mL of the extract. Adhesion was quantified using the number of Candida cells adhered to 150 HBEC determined by optical microscope. Biofilm formation was evaluated using two methodologies: XTT (2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide) and crystal violet assay, and further analyzed by electronic scan microscopy. CSH was quantified with the microbial adhesion to hydrocarbons test. We could detect that the extract of E. uniflora was able to reduce adhesion to HBEC and CSH for both Candida albicans and non-Candida albicansCandida species. We also observed a statistically significant reduced ability to form biofilms in biofilm-producing strains using both methods of quantification. However, two highly biofilm-producing strains of Candida tropicalis had a very large reduction in biofilm formation. This study reinforces the idea that besides growth inhibition, E. uniflora may interfere with the expression of some virulence factors of Candida spp. and may be possibly applied in the future as a novel antifungal agent. [ABSTRACT FROM AUTHOR]

Published
2018
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