15 results on '"Aboagye, Jeremy"'
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2. Efficacy and immunogenicity of R21/Matrix-M vaccine against clinical malaria after 2 years' follow-up in children in Burkina Faso: a phase 1/2b randomised controlled trial
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Datoo, Mehreen S, Natama, Hamtandi Magloire, Somé, Athanase, Bellamy, Duncan, Traoré, Ousmane, Rouamba, Toussaint, Tahita, Marc Christian, Ido, N Félix André, Yameogo, Prisca, Valia, Daniel, Millogo, Aida, Ouedraogo, Florence, Soma, Rachidatou, Sawadogo, Seydou, Sorgho, Faizatou, Derra, Karim, Rouamba, Eli, Ramos-Lopez, Fernando, Cairns, Matthew, Provstgaard-Morys, Samuel, Aboagye, Jeremy, Lawrie, Alison, Roberts, Rachel, Valéa, Innocent, Sorgho, Hermann, Williams, Nicola, Glenn, Gregory, Fries, Louis, Reimer, Jenny, Ewer, Katie J, Shaligram, Umesh, Hill, Adrian V S, and Tinto, Halidou
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- 2022
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3. Safety and immunogenicity of a simian-adenovirus-vectored rabies vaccine: an open-label, non-randomised, dose-escalation, first-in-human, single-centre, phase 1 clinical trial
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Jenkin, Daniel, Ritchie, Adam J, Aboagye, Jeremy, Fedosyuk, Sofiya, Thorley, Luke, Provstgaad-Morys, Samuel, Sanders, Helen, Bellamy, Duncan, Makinson, Rebecca, Xiang, Zhi Quan, Bolam, Emma, Tarrant, Richard, Ramos Lopez, Fernando, Platt, Abigail, Poulton, Ian, Green, Catherine, Ertl, Hildegund C J, Ewer, Katie J, and Douglas, Alexander D
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- 2022
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4. Reactogenicity and immunogenicity after a late second dose or a third dose of ChAdOx1 nCoV-19 in the UK: a substudy of two randomised controlled trials (COV001 and COV002)
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Adlou, Syed, Aley, Robert, Ali, Aabidah, Anslow, Rachel, Baker, Megan, Baker, Phillip, Barrett, Jordan R., Bates, Louise, Beadon, Kirsten, Beckley, Rebecca, Bell, Jonathan, Bellamy, Duncan, Beveridge, Amy, Bissett, Cameron, Blackwell, Luke, Bletchly, Heather, Boyd, Amy, Bridges-Webb, Alice, Brown, Charlie, Byard, Nicholas, Camara, Susana, Cifuentes Gutierrez, Liliana, Collins, Andrea M., Cooper, Rachel, Crocker, Wendy E.M., Darton, Thomas C., Davies, Hannah, Davies, Judith, Demissie, Tesfaye, Di Maso, Claudio, Dinesh, Tanya, Donnellan, Francesca R., Douglas, Alexander D., Drake-Brockman, Rachael, Duncan, Christopher J.A., Elias, Sean C., Emary, Katherine R.W., Ghulam Farooq, Mutjaba, Faust, Saul N., Felle, Sally, Ferreira, Daniela, Ferreira Da Silva, Carla, Finn, Adam, Ford, Karen J., Francis, Emma, Furze, Julie, Fuskova, Michelle, Galiza, Eva, Gibertoni Cruz, Ana, Godfrey, Leila, Goodman, Anna L., Green, Catherine, Green, Christopher A., Greenwood, Nicola, Harrison, Daisy, Hart, Thomas C., Hawkins, Sophia, Heath, Paul T., Hill, Helen, Hillson, Kushalinii, Horsington, Bryn, Hou, Mimi M., Howe, Elizabeth, Howell, Nicola, Joe, Carina, Jones, Elizabeth, Kasanyinga, Mwila, Keen, Jade, Kelly, Sarah, Kerr, David, Khan, Liaquat, Khozoee, Baktash, Kinch, Jasmin, Kinch, Patrick, Koleva, Stanislava, Kwok, Jonathan, Larkworthy, Colin W., Lawrie, Alison M., Lazarus, Rajeka, Lees, Emily A., Li, Grace, Libri, Vincenzo, Lillie, Patrick J., Linder, Aline, Long, Fei, Lopez Ramon, Raquel, Mabbett, Reece, Makinson, Rebecca, Marinou, Spyridoula, Marlow, Emma, Marshall, Julia L., Mazur, Olga, McEwan, Joanne, McGregor, Alastair C., Mokaya, Jolynne, Morey, Ella, Morshead, Gertraud, Morter, Richard, Muller, Jilly, Mweu, Philomena, Noristani, Rabiullah, Owino, Nelly, Polo Peralta Alvarez, Marco, Platt, Abigail, Pollock, Katrina M., Poulton, Ian, Provstgaard-Morys, Samuel, Pulido-Gomez, David, Rajan, Matthew, Ramos Lopez, Fernando, Ritchie, Adam, Roberts, Hannah, Rollier, Christine, Rudiansyah, Indra, Sanders, Katherine, Saunders, Jack E., Seddiqi, Samiullah, Sharpe, Hannah R., Shaw, Robert, Silva-Reyes, Laura, Singh, Nisha, Smith, David J., Smith, Catherine C., Smith, Andrew, Spencer, Alexandra J., Stuart, Arabella S.V., Sutherland, Rebecca, Szigeti, Anna, Tang, Karly, Thomas, Merin, Thomas, Tonia M., Thompson, Amber, Thomson, Emma C., Török, Estée M., Toshner, Mark, Tran, Nguyen, Trivett, Rose, Turnbull, Iain, Turner, Cheryl, Turner, David P.J., Ulaszewska, Marta, Vichos, Iason, Walker, Laura, Watson, Marion E., Whelan, Conor, White, Rachel, Williams, Sarah J., Williams, Christopher J.A., Wright, Daniel, Yao, Andy, Flaxman, Amy, Marchevsky, Natalie G, Jenkin, Daniel, Aboagye, Jeremy, Aley, Parvinder K, Angus, Brian, Belij-Rammerstorfer, Sandra, Bibi, Sagida, Bittaye, Mustapha, Cappuccini, Federica, Cicconi, Paola, Clutterbuck, Elizabeth A, Davies, Sophie, Dejnirattisai, Wanwisa, Dold, Christina, Ewer, Katie J, Folegatti, Pedro M, Fowler, Jamie, Hill, Adrian V S, Kerridge, Simon, Minassian, Angela M, Mongkolsapaya, Juthathip, Mujadidi, Yama F, Plested, Emma, Ramasamy, Maheshi N, Robinson, Hannah, Sanders, Helen, Sheehan, Emma, Smith, Holly, Snape, Matthew D, Song, Rinn, Woods, Danielle, Screaton, Gavin, Gilbert, Sarah C, Voysey, Merryn, Pollard, Andrew J, and Lambe, Teresa
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- 2021
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5. T cell and antibody responses induced by a single dose of ChAdOx1 nCoV-19 (AZD1222) vaccine in a phase 1/2 clinical trial
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Ewer, Katie J., Barrett, Jordan R., Belij-Rammerstorfer, Sandra, Sharpe, Hannah, Makinson, Rebecca, Morter, Richard, Flaxman, Amy, Alderson, Jennifer, Bittaye, Mustapha, Dold, Christina, Provine, Nicholas M., Aboagye, Jeremy, Fowler, Jamie, Silk, Sarah E., Aley, Parvinder K., Bellamy, Duncan, and Wright, Daniel
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T cells -- Physiological aspects ,Biological sciences ,Health - Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of Coronavirus Disease 2019 (COVID-19), has caused a global pandemic, and safe, effective vaccines are urgently needed.sup.1. Strong, Th1-skewed T cell responses can drive protective humoral and cell-mediated immune responses.sup.2 and might reduce the potential for disease enhancement.sup.3. Cytotoxic T cells clear virus-infected host cells and contribute to control of infection.sup.4. Studies of patients infected with SARS-CoV-2 have suggested a protective role for both humoral and cell-mediated immune responses in recovery from COVID-19 (refs. .sup.5,6). ChAdOx1 nCoV-19 (AZD1222) is a candidate SARS-CoV-2 vaccine comprising a replication-deficient simian adenovirus expressing full-length SARS-CoV-2 spike protein. We recently reported preliminary safety and immunogenicity data from a phase 1/2 trial of the ChAdOx1 nCoV-19 vaccine (NCT04400838).sup.7 given as either a one- or two-dose regimen. The vaccine was tolerated, with induction of neutralizing antibodies and antigen-specific T cells against the SARS-CoV-2 spike protein. Here we describe, in detail, exploratory analyses of the immune responses in adults, aged 18-55 years, up to 8 weeks after vaccination with a single dose of ChAdOx1 nCoV-19 in this trial, demonstrating an induction of a Th1-biased response characterized by interferon-[gamma] and tumor necrosis factor-[alpha] cytokine secretion by CD4.sup.+ T cells and antibody production predominantly of IgG1 and IgG3 subclasses. CD8.sup.+ T cells, of monofunctional, polyfunctional and cytotoxic phenotypes, were also induced. Taken together, these results suggest a favorable immune profile induced by ChAdOx1 nCoV-19 vaccine, supporting the progression of this vaccine candidate to ongoing phase 2/3 trials to assess vaccine efficacy. A single dose of the ChAdOx1 nCoV-19 vaccine elicits antibodies and cytokine-producing T cells that might help control or prevent SARS-CoV-2 infection., Author(s): Katie J. Ewer [sup.1] , Jordan R. Barrett [sup.1] , Sandra Belij-Rammerstorfer [sup.1] , Hannah Sharpe [sup.1] , Rebecca Makinson [sup.1] , Richard Morter [sup.1] , Amy Flaxman [sup.1] [...]
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- 2021
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6. Persistence of the immune response after two doses of ChAdOx1 nCov-19 (AZD1222): 1 year of follow-up of two randomized controlled trials.
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Voysey, Merryn, Flaxman, Amy, Aboagye, Jeremy, Aley, Parvinder K, Belij-Rammerstorfer, Sandra, Bibi, Sagida, Bittaye, Mustapha, Cappuccini, Federica, Charlton, Sue, Clutterbuck, Elizabeth A, Davies, Sophie, Dold, Christina, Edwards, Nick J, Ewer, Katie J, Faust, Saul N, Folegatti, Pedro M, Fowler, Jamie, Gilbride, Ciaran, Gilbert, Sarah C, and Godfrey, Leila
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IMMUNE response ,COVID-19 vaccines ,ANTIBODY titer ,VACCINE effectiveness ,IMMUNOGLOBULIN G - Abstract
The trajectory of immune responses following the primary dose series determines the decline in vaccine effectiveness over time. Here we report on maintenance of immune responses during the year following a two-dose schedule of ChAdOx1 nCoV-19/AZD1222, in the absence of infection, and also explore the decay of antibody after infection. Total spike-specific IgG antibody titres were lower with two low doses of ChAdOx1 nCoV-19 vaccines (two low doses) (P = 0.0006) than with 2 standard doses (the approved dose) or low dose followed by standard dose vaccines regimens. Longer intervals between first and second doses resulted in higher antibody titres (P < 0.0001); however, there was no evidence that the trajectory of antibody decay differed by interval or by vaccine dose, and the decay of IgG antibody titres followed a similar trajectory after a third dose of ChAdOx1 nCoV-19. Trends in post-infection samples were similar with an initial rapid decay in responses but good persistence of measurable responses thereafter. Extrapolation of antibody data, following two doses of ChAdOx1 nCov-19, demonstrates a slow rate of antibody decay with modelling, suggesting that antibody titres are well maintained for at least 2 years. These data suggest a persistent immune response after two doses of ChAdOx1 nCov-19 which will likely have a positive impact against serious disease and hospitalization. [ABSTRACT FROM AUTHOR]
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- 2023
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7. Reactogenicity and immunogenicity after a late second dose or a third dose of ChAdOx1 nCoV-19 in the UK: a substudy of two randomised controlled trials (COV001 and COV002)
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Flaxman, Amy, Marchevsky, Natalie G, Jenkin, Daniel, Aboagye, Jeremy, Aley, Parvinder K, Angus, Brian, Belij-Rammerstorfer, Sandra, Bibi, Sagida, Bittaye, Mustapha, Cappuccini, Federica, Cicconi, Paola, Clutterbuck, Elizabeth A, Davies, Sophie, Dejnirattisai, Wanwisa, Dold, Christina, Ewer, Katie J, Folegatti, Pedro M, Fowler, Jamie, Hill, Adrian VS, Kerridge, Simon, Minassian, Angela M, Mongkolsapaya, Juthathip, Mujadidi, Yama F, Plested, Emma, Ramasamy, Maheshi N, Robinson, Hannah, Sanders, Helen, Sheehan, Emma, Smith, Holly, Snape, Matthew D, Song, Rinn, Woods, Danielle, Screaton, Gavin, Gilbert, Sarah C, Voysey, Merryn, Pollard, Andrew J, Lambe, Teresa, and Oxford COVID Vaccine Trial group
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BACKGROUND: COVID-19 vaccine supply shortages are causing concerns about compromised immunity in some countries as the interval between the first and second dose becomes longer. Conversely, countries with no supply constraints are considering administering a third dose. We assessed the persistence of immunogenicity after a single dose of ChAdOx1 nCoV-19 (AZD1222), immunity after an extended interval (44-45 weeks) between the first and second dose, and response to a third dose as a booster given 28-38 weeks after the second dose. METHODS: In this substudy, volunteers aged 18-55 years who were enrolled in the phase 1/2 (COV001) controlled trial in the UK and had received either a single dose or two doses of 5 × 1010 viral particles were invited back for vaccination. Here we report the reactogenicity and immunogenicity of a delayed second dose (44-45 weeks after first dose) or a third dose of the vaccine (28-38 weeks after second dose). Data from volunteers aged 18-55 years who were enrolled in either the phase 1/2 (COV001) or phase 2/3 (COV002), single-blinded, randomised controlled trials of ChAdOx1 nCoV-19 and who had previously received a single dose or two doses of 5 × 1010 viral particles are used for comparison purposes. COV001 is registered with ClinicalTrials.gov, NCT04324606, and ISRCTN, 15281137, and COV002 is registered with ClinicalTrials.gov, NCT04400838, and ISRCTN, 15281137, and both are continuing but not recruiting. FINDINGS: Between March 11 and 21, 2021, 90 participants were enrolled in the third-dose boost substudy, of whom 80 (89%) were assessable for reactogenicity, 75 (83%) were assessable for evaluation of antibodies, and 15 (17%) were assessable for T-cells responses. The two-dose cohort comprised 321 participants who had reactogenicity data (with prime-boost interval of 8-12 weeks: 267 [83%] of 321; 15-25 weeks: 24 [7%]; or 44-45 weeks: 30 [9%]) and 261 who had immunogenicity data (interval of 8-12 weeks: 115 [44%] of 261; 15-25 weeks: 116 [44%]; and 44-45 weeks: 30 [11%]). 480 participants from the single-dose cohort were assessable for immunogenicity up to 44-45 weeks after vaccination. Antibody titres after a single dose measured approximately 320 days after vaccination remained higher than the titres measured at baseline (geometric mean titre of 66·00 ELISA units [EUs; 95% CI 47·83-91·08] vs 1·75 EUs [1·60-1·93]). 32 participants received a late second dose of vaccine 44-45 weeks after the first dose, of whom 30 were included in immunogenicity and reactogenicity analyses. Antibody titres were higher 28 days after vaccination in those with a longer interval between first and second dose than for those with a short interval (median total IgG titre: 923 EUs [IQR 525-1764] with an 8-12 week interval; 1860 EUs [917-4934] with a 15-25 week interval; and 3738 EUs [1824-6625] with a 44-45 week interval). Among participants who received a third dose of vaccine, antibody titres (measured in 73 [81%] participants for whom samples were available) were significantly higher 28 days after a third dose (median total IgG titre: 3746 EUs [IQR 2047-6420]) than 28 days after a second dose (median 1792 EUs [IQR 899-4634]; Wilcoxon signed rank test p=0·0043). T-cell responses were also boosted after a third dose (median response increased from 200 spot forming units [SFUs] per million peripheral blood mononuclear cells [PBMCs; IQR 127-389] immediately before the third dose to 399 SFUs per milion PBMCs [314-662] by day 28 after the third dose; Wilcoxon signed rank test p=0·012). Reactogenicity after a late second dose or a third dose was lower than reactogenicity after a first dose. INTERPRETATION: An extended interval before the second dose of ChAdOx1 nCoV-19 leads to increased antibody titres. A third dose of ChAdOx1 nCoV-19 induces antibodies to a level that correlates with high efficacy after second dose and boosts T-cell responses. FUNDING: UK Research and Innovation, Engineering and Physical Sciences Research Council, National Institute for Health Research, Coalition for Epidemic Preparedness Innovations, National Institute for Health Research Oxford Biomedical Research Centre, Chinese Academy of Medical Sciences Innovation Fund for Medical Science, Thames Valley and South Midlands NIHR Clinical Research Network, AstraZeneca, and Wellcome.
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- 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
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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., 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., Pollard, Andrew J., Aban, Marites, Abayomi, Fatola, Abeyskera, Kushala, Aboagye, Jeremy, Adam, Matthew, Adams, Kirsty, Adamson, James, Adelaja, Yemi A., Adlou, Syed, Ahmed, Khatija, Akhalwaya, Yasmeen, Akhalwaya, Saajida, Alcock, Andrew, Ali, Aabidah, Allen, Elizabeth R., Allen, Lauren, Almeida, Thamires C.D.S.C., and Alves, Mariana P.S.
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General Medicine - Abstract
© 2020 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license Background: 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. Methods: 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. Findings: 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. Interpretation: 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. Funding: 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.
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- 2021
9. T cell and antibody responses induced by a single dose of ChAdOx1 nCoV-19 (AZD1222) vaccine in a phase 1/2 clinical trial
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Ewer, Katie J., Barrett, Jordan R., Belij-Rammerstorfer, Sandra, Sharpe, Hannah, Makinson, Rebecca, Morter, Richard, Flaxman, Amy, Wright, Daniel, Bellamy, Duncan, Bittaye, Mustapha, Dold, Christina, Provine, Nicholas M., Aboagye, Jeremy, Fowler, Jamie, Silk, Sarah E., Alderson, Jennifer, Aley, Parvinder K., Angus, Brian, Berrie, Eleanor, Bibi, Sagida, Cicconi, Paola, Clutterbuck, Elizabeth A., Chelysheva, Irina, Folegatti, Pedro M., Fuskova, Michelle, Green, Catherine M., Jenkin, Daniel, Kerridge, Simon, Lawrie, Alison, Minassian, Angela M., Moore, Maria, Mujadidi, Yama, Plested, Emma, Poulton, Ian, Ramasamy, Maheshi N., Robinson, Hannah, Song, Rinn, Snape, Matthew D., Tarrant, Richard, Voysey, Merryn, Watson, Marion E. E., Douglas, Alexander D., Hill, Adrian V. S., Gilbert, Sarah C., Pollard, Andrew J., Lambe, Teresa, Ali, Aabidah, Allen, Elizabeth, Baker, Megan, Barnes, Eleanor, Borthwick, Nicola, Boyd, Amy, Brown-O’Sullivan, Charlie, Burgoyne, Joshua, Byard, Nicholas, Puig, Ingrid Cabrera, Cappuccini, Federica, Cho, Jee-Sun, Clark, Elizabeth, Crocker, Wendy E. M., Datoo, Mehreen S., Davies, Hannah, Donnellan, Francesca R., Dunachie, Susanna Jane, Edwards, Nick J., Elias, Sean C., Furze, Julie, Gilbride, Ciaran, Gorini, Giacomo, Gupta, Gaurav, Harris, Stephanie A., Hodgson, Susanne H. C., Hou, Mimi M., Jackson, Susan, Jones, Kathryn, Kailath, Reshma, King, Lloyd, Larkworthy, Colin W., Li, Yuanyuan, Lias, Amelia M., Linder, Aline, Lipworth, Samuel, Ramon, Raquel Lopez, Madhavan, Meera, Marlow, Emma, Marshall, Julia L., Mentzer, Alexander J., Morrison, Hazel, Moya, Nathifa, Mukhopadhyay, Ekta, Noé, Andrés, Nugent, Fay L., Pipini, Dimitra, Pulido-Gomez, David, Lopez, Fernando Ramos, Ritchie, Adam John, Rudiansyah, Indra, Salvador, Stephannie, Sanders, Helen, Satti, Iman, Shea, Adam, Silk, Sarah, Spencer, Alexandra J., Tanner, Rachel, Taylor, Iona Jennifer, Themistocleous, Yrene, Thomas, Merin, Tran, Nguyen, Truby, Adam, Turner, Cheryl, Turner, Nicola, Ulaszewska, Marta, Worth, Andrew T., Kingham-Page, Lucy, Alvarez, Marco Polo Peralta, Anslow, Rachel, Bates, Louise, Beadon, Kirsten, Beckley, Rebecca, Beveridge, Amy, Bijker, Else Margreet, Blackwell, Luke, Burbage, Jamie, Camara, Susana, Carr, Melanie, Colin-Jones, Rachel, Cooper, Rachel, Cunningham, Christina J., Demissie, Tesfaye, Maso, Claudio Di, Douglas, Naomi, Drake-Brockman, Rachael, Drury, Ruth Elizabeth, Emary, Katherine R. W., Felle, Sally, Feng, Shuo, Silva, Carla Ferreira Da, Ford, Karen J., Francis, Emma, Gracie, Lara, Hamlyn, Joseph, Hanumunthadu, Brama, Harrison, Daisy, Hart, Thomas C., Hawkins, Sophia, Hill, Jennifer, Howe, Elizabeth, Howell, Nicola, Jones, Elizabeth, Keen, Jade, Kelly, Sarah, Kerr, David, Khan, Liaquat, Kinch, Jasmin, Koleva, Stanislava, Lees, Emily A., Lelliott, Alice, Liu, Xinxue, Marchevsky, Natalie G., Marinou, Spyridoula, McEwan, Joanne, Morey, Ella, Morshead, Gertraud, Muller, Jilly, Munro, Claire, Murphy, Sarah, Mweu, Philomena, Nuthall, Elizabeth, O’Brien, Katie, O’Connor, Daniel, O’Reilly, Peter John, Oguti, Blanché, Osborne, Piper, Owino, Nelly, Parker, Kaye, Pfafferott, Katja, Phillips, Daniel, Provstgaard-Morys, Samuel, Ratcliffe, Helen, Rawlinson, Thomas, Rhead, Sarah, Roberts, Hannah, Sanders, Katherine, Silva-Reyes, Laura, Rollier, Christine S., Smith, Catherine C., Smith, David J., Stockdale, Lisa, Szigeti, Anna, Thomas, Tonia M., Thompson, Amber, Tomic, Adriana, Tonks, Susan, Varughese, Rachel, Verheul, Marije K., Vichos, Iason, Walker, Laura, White, Caroline, White, Rachel, Yao, Xin Li, Conlon, Christopher P., Frater, John, Cifuentes, Liliana, Baleanu, Ioana, Bolam, Emma, Boland, Elena, Brenner, Tanja, Damratoski, Brad E., Datta, Chandra, Muhanna, Omar El, Fisher, Richard, Galian-Rubio, Pablo, Hodges, Gina, Jackson, Frederic, Liu, Shuchang, Loew, Lisa, Morgans, Roisin, Morris, Susan Jane, Olchawski, Vicki, Oliveria, Catarina, Parracho, Helena, Pabon, Emilia Reyes, Tahiri-Alaoui, Abdessamad, Taylor, Keja, Williams, Paul, Zizi, Dalila, Arbe-Barnes, Edward H., Baker, Philip, Batten, Alexander, Downing, Charlotte, Drake, Jonathan, English, Marcus Rex, Henry, John Aaron, Iveson, Poppy, Killen, Annabel, King, Thomas B., Larwood, Jessica P. J., Mallett, Garry, Mansatta, Kushal, Mirtorabi, Neginsadat, Patrick-Smith, Maia, Perring, James, Radia, Kajal, Roche, Sophie, Schofield, Ella, Naude, Rebecca te Water, Towner, James, Baker, Natalie, Bewley, Kevin R., Brunt, Emily, Buttigieg, Karen R., Carroll, Miles W., Charlton, Sue, Coombes, Naomi S., Elmore, Michael J., Godwin, Kerry, Hallis, Bassam, Knott, Daniel, McInroy, Lorna, Shaik, Imam, Thomas, Kelly, Tree, Julia A., Blundell, Caitlin L., Cao, Michelangelo, Kelly, Dearbhla, Schmid, Annina, Skelly, Donal T., Themistocleous, Andreas, Dong, Tao, Field, Samantha, Hamilton, Elizabeth, Kelly, Elizabeth, Klenerman, Paul, Knight, Julian C., Lie, Yolanda, Petropoulos, Christos, Sedik, Cynthia, Wrin, Terri, Meddaugh, Gretchen, Peng, Yanchun, Screaton, Gavin, and Stafford, Elizabeth
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0301 basic medicine ,biology ,business.industry ,T cell ,Immunogenicity ,General Medicine ,Vaccine efficacy ,General Biochemistry, Genetics and Molecular Biology ,Vaccination ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,Immune system ,Immunity ,030220 oncology & carcinogenesis ,Immunology ,biology.protein ,medicine ,Cytotoxic T cell ,Antibody ,business - Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of Coronavirus Disease 2019 (COVID-19), has caused a global pandemic, and safe, effective vaccines are urgently needed1. Strong, Th1-skewed T cell responses can drive protective humoral and cell-mediated immune responses2 and might reduce the potential for disease enhancement3. Cytotoxic T cells clear virus-infected host cells and contribute to control of infection4. Studies of patients infected with SARS-CoV-2 have suggested a protective role for both humoral and cell-mediated immune responses in recovery from COVID-19 (refs. 5,6). ChAdOx1 nCoV-19 (AZD1222) is a candidate SARS-CoV-2 vaccine comprising a replication-deficient simian adenovirus expressing full-length SARS-CoV-2 spike protein. We recently reported preliminary safety and immunogenicity data from a phase 1/2 trial of the ChAdOx1 nCoV-19 vaccine (NCT04400838)7 given as either a one- or two-dose regimen. The vaccine was tolerated, with induction of neutralizing antibodies and antigen-specific T cells against the SARS-CoV-2 spike protein. Here we describe, in detail, exploratory analyses of the immune responses in adults, aged 18–55 years, up to 8 weeks after vaccination with a single dose of ChAdOx1 nCoV-19 in this trial, demonstrating an induction of a Th1-biased response characterized by interferon-γ and tumor necrosis factor-α cytokine secretion by CD4+ T cells and antibody production predominantly of IgG1 and IgG3 subclasses. CD8+ T cells, of monofunctional, polyfunctional and cytotoxic phenotypes, were also induced. Taken together, these results suggest a favorable immune profile induced by ChAdOx1 nCoV-19 vaccine, supporting the progression of this vaccine candidate to ongoing phase 2/3 trials to assess vaccine efficacy. A single dose of the ChAdOx1 nCoV-19 vaccine elicits antibodies and cytokine-producing T cells that might help control or prevent SARS-CoV-2 infection.
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- 2020
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10. Safety and Immunogenicity of Adenovirus and Poxvirus Vectored Vaccines against a Mycobacterium Avium Complex Subspecies.
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Folegatti, Pedro M., Flaxman, Amy, Jenkin, Daniel, Makinson, Rebecca, Kingham-Page, Lucy, Bellamy, Duncan, Ramos Lopez, Fernando, Sheridan, Jonathan, Poulton, Ian, Aboagye, Jeremy, Tran, Nguyen, Mitton, Celia, Roberts, Rachel, Lawrie, Alison M., Hill, Adrian V. S., Ewer, Katie J., Gilbert, Sarah, Kamen, Amine A., and Henry, Olivier
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MYCOBACTERIUM avium ,MYCOBACTERIUM avium paratuberculosis ,VIRAL vaccines ,ADENOVIRUSES ,SUBSPECIES - Abstract
Heterologous prime-boost strategies are known to substantially increase immune responses in viral vectored vaccines. Here we report on safety and immunogenicity of the poxvirus Modified Vaccinia Ankara (MVA) vectored vaccine expressing four Mycobacterium avium subspecies paratuberculosis antigens as a single dose or as a booster vaccine following a simian adenovirus (ChAdOx2) prime. We demonstrate that a heterologous prime-boost schedule is well tolerated and induced T-cell immune responses. [ABSTRACT FROM AUTHOR]
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- 2021
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11. Safety and immunogenicity of varied doses of R21/Matrix-M™ vaccine at three years follow-up: A phase 1b age de-escalation, dose-escalation trial in adults, children, and infants in Kilifi-Kenya.
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Sang S, Datoo MS, Otieno E, Muiruri C, Bellamy D, Gathuri E, Ngoto O, Musembi J, Provstgaard-Morys S, Stockdale L, Aboagye J, Woods D, Lawrie A, Roberts R, Keter K, Kimani D, Ndungu F, Kapulu M, Njau I, Orindi B, Ewer KJ, Hill AVS, Bejon P, and Hamaluba M
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Background: Falciparum malaria remains a global health problem. Two vaccines, based on the circumsporozoite antigen, are available. RTS, S/AS01 was recommended for use in 2021 following the advice of the World Health Organisation (WHO) Strategic Advisory Group of Experts (SAGE) on Immunization and WHO Malaria Policy Advisory Group (MPAG). It has since been pre-qualified in 2022 by the WHO. R21 is similar to RTS, S/AS01, and recently licensed in Nigeria, Ghana and Burkina Faso following Phase 3 trial results., Methods: We conducted a Phase 1b age de-escalation, dose escalation bridging study after a change in the manufacturing process for R21. We recruited healthy adults and children and used a three dose primary vaccination series with a booster dose at 1-2 years. Variable doses of R21 and adjuvant (Matrix-M ™) were administered at 10µgR21/50 µg Matrix-M™, 5µgR21/25µg Matrix-M™ and 5µgR21/50µg Matrix-M™ to 20 adults, 20 children, and 51 infants., Results: Self-limiting adverse events were reported relating to the injection site and mild systemic symptoms. Two serious adverse events were reported, neither linked to vaccination. High levels of IgG antibodies to the circumsporozoite antigen were induced, and geometric mean titres in infants, the target group, were 1.1 (0.9 to 1.3) EU/mL at day 0, 10175 (7724 to 13404) EU/mL at day 84 and (following a booster dose at day 421) 6792 (5310 to 8687) EU/mL at day 456., Conclusion: R21/Matrix-M™ is safe, and immunogenic when given at varied doses with the peak immune response seen in infants 28 days after a three dose primary vaccination series given four weeks apart. Antibody responses were restored 28 days after a 4
th dose given one year post a three dose primary series in the young children and infants., Registration: Clinicaltrials.gov (NCT03580824; 9th of July 2018; Pan African Clinical Trials Registry (PACTR202105682956280; 17th May 2021)., Competing Interests: Competing interests: AVSH and KJE are named as coinventors on patent applications related to R21. No competing interests were disclosed for other authors., (Copyright: © 2023 Sang S et al.)- Published
- 2023
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12. Tolerability and immunogenicity of an intranasally-administered adenovirus-vectored COVID-19 vaccine: An open-label partially-randomised ascending dose phase I trial.
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Madhavan M, Ritchie AJ, Aboagye J, Jenkin D, Provstgaad-Morys S, Tarbet I, Woods D, Davies S, Baker M, Platt A, Flaxman A, Smith H, Belij-Rammerstorfer S, Wilkins D, Kelly EJ, Villafana T, Green JA, Poulton I, Lambe T, Hill AVS, Ewer KJ, and Douglas AD
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- Adult, Humans, Adenoviridae genetics, Antibodies, Viral, BNT162 Vaccine, ChAdOx1 nCoV-19, COVID-19 Vaccines adverse effects, SARS-CoV-2, Vaccination adverse effects, mRNA Vaccines, COVID-19 prevention & control, Viral Vaccines
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Background: Intranasal vaccination may induce protective local and systemic immune responses against respiratory pathogens. A number of intranasal SARS-CoV-2 vaccine candidates have achieved protection in pre-clinical challenge models, including ChAdOx1 nCoV-19 (AZD1222, University of Oxford / AstraZeneca)., Methods: We performed a single-centre open-label Phase I clinical trial of intranasal vaccination with ChAdOx1 nCoV-19 in healthy adults, using the existing formulation produced for intramuscular administration. Thirty SARS-CoV-2 vaccine-naïve participants were allocated to receive 5 × 10
9 viral particles (VP, n=6), 2 × 1010 VP (n=12), or 5 × 1010 VP (n=12). Fourteen received second intranasal doses 28 days later. A further 12 received non-study intramuscular mRNA SARS-CoV-2 vaccination between study days 22 and 46. To investigate intranasal ChAdOx1 nCoV-19 as a booster, six participants who had previously received two intramuscular doses of ChAdOx1 nCoV-19 and six who had received two intramuscular doses of BNT162b2 (Pfizer / BioNTech) were given a single intranasal dose of 5 × 1010 VP of ChAdOx1 nCoV-19. Objectives were to assess safety (primary) and mucosal antibody responses (secondary)., Findings: Reactogenicity was mild or moderate. Antigen-specific mucosal antibody responses to intranasal vaccination were detectable in a minority of participants, rarely exceeding levels seen after SARS-CoV-2 infection. Systemic responses to intranasal vaccination were typically weaker than after intramuscular vaccination with ChAdOx1 nCoV-19. Antigen-specific mucosal antibody was detectable in participants who received an intramuscular mRNA vaccine after intranasal vaccination. Seven participants developed symptomatic SARS-CoV-2 infection., Interpretation: This formulation of intranasal ChAdOx1 nCoV-19 showed an acceptable tolerability profile but induced neither a consistent mucosal antibody response nor a strong systemic response., Funding: AstraZeneca., Competing Interests: Declaration of interests Oxford University has entered into a partnership with AstraZeneca to develop ChAdOx1 nCoV-19. AJR and KE may receive royalties arising from the University of Oxford/AstraZeneca COVID-19 vaccine. TL is named as an inventor on a patent application covering this SARS-CoV-2 vaccine and was previously a consultant to Vaccitech on an unrelated project. AVSH is a cofounder of and former consultant to Vaccitech is named as an inventor on a patent covering design and use of ChAdOx1-vectored vaccines (PCT/GB2012/000467), and may receive royalties arising for the University of Oxford/AstraZeneca COVID-19 vaccine. DW, EJK, TV, and JAG are current employees of AstraZeneca and hold or may hold AstraZeneca stock. ADD reports grants and personal fees from AstraZeneca outside of the submitted work, is a named inventor on patent applications relating the chimpanzee adenovirus platform technology and manufacturing, and may receive royalties arising from the University of Oxford/AstraZeneca COVID-19 vaccine. All other authors declare no competing interests., (Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2022
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13. Safety and immunogenicity of ChAdOx1 MERS vaccine candidate in healthy Middle Eastern adults (MERS002): an open-label, non-randomised, dose-escalation, phase 1b trial.
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Bosaeed M, Balkhy HH, Almaziad S, Aljami HA, Alhatmi H, Alanazi H, Alahmadi M, Jawhary A, Alenazi MW, Almasoud A, Alanazi R, Bittaye M, Aboagye J, Albaalharith N, Batawi S, Folegatti P, Ramos Lopez F, Ewer K, Almoaikel K, Aljeraisy M, Alothman A, Gilbert SC, and Khalaf Alharbi N
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- Adult, Antibodies, Viral, ChAdOx1 nCoV-19, Coronavirus Infections prevention & control, Headache, Humans, Immunogenicity, Vaccine, Myalgia, Vaccines, DNA, Viral Vaccines, COVID-19 prevention & control
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Background: ChAdOx1-vectored vaccine candidates against several pathogens have been developed and tested in clinical trials and ChAdOx1 nCoV-19 has now been licensed for emergency use for COVID-19. We assessed the safety and immunogenicity of the ChAdOx1 MERS vaccine in a phase 1b trial in healthy Middle Eastern adults., Method: MERS002 is an open-label, non-randomised, dose-escalation, phase 1b trial. Healthy Middle Eastern adults aged 18-50 years were included in the study. ChAdOx1 MERS was administered as a single intramuscular injection into the deltoid muscle of the non-dominant arm at three different dose groups: 5·0 × 10
9 viral particles in a low-dose group, 2·5 × 1010 viral particles in an intermediate-dose group, and 5·0 × 1010 viral particles in a high-dose group. The primary objective was to assess the safety and tolerability of ChAdOx1 MERS, measured by the occurrence of solicited and unsolicited adverse events after vaccination for up to 28 days and occurrence of serious adverse events up to 6 months. The study is registered with ClinicalTrials.gov, NCT04170829., Findings: Between Dec 17, 2019, and June 1, 2020, 24 participants were enrolled (six to the low-dose, nine to the intermediate-dose, and nine to the high-dose group) and received a dose; 23 were available for follow-up at 6 months. The one dose of ChAdOx1 MERS vaccine was well tolerated with no serious adverse event reported during the 6 months of follow-up. Most adverse events were mild (67, 74%) and moderate (17, 19%). Six (7%) severe adverse events were reported by two participants in the intermediate-dose group (two feverish, two headache, one joint pain, and one muscle pain). Pain at the injection site was the most common local and overall adverse event, reported by 15 (63%) of the 24 participants. The most common systemic adverse event was headache, reported by 14 (58%), followed by muscle pain reported by 13 (54%). The vaccine induced both antibody and T cell immune responses in all volunteers; antibodies peaked at day 28 and T cell responses peaked at day 14; and continued until the end of follow-up at 6 months., Interpretation: The acceptable safety and immunogenicity data from this phase 1b trial of ChAdOx1 MERS vaccine candidate in Healthy Middle Eastern adults, combined with previous safety and immunogenicity data from a trial in the UK, support selecting the ChAdOx1 MERS vaccine for advancement into phase 2 clinical evaluation., Funding: UK Department of Health and Social Care, using UK Aid funding, managed by the UK National Institute for Health Research; and King Abdullah International Medical Research Center., Competing Interests: SCG is a named inventor on a patent related to ChAdOx1 MERS. All other authors declare no competing interests., (© 2022 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license.)- Published
- 2022
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14. Reactogenicity and immunogenicity after a late second dose or a third dose of ChAdOx1 nCoV-19 in the UK: a substudy of two randomised controlled trials (COV001 and COV002).
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Flaxman A, Marchevsky NG, Jenkin D, Aboagye J, Aley PK, Angus B, Belij-Rammerstorfer S, Bibi S, Bittaye M, Cappuccini F, Cicconi P, Clutterbuck EA, Davies S, Dejnirattisai W, Dold C, Ewer KJ, Folegatti PM, Fowler J, Hill AVS, Kerridge S, Minassian AM, Mongkolsapaya J, Mujadidi YF, Plested E, Ramasamy MN, Robinson H, Sanders H, Sheehan E, Smith H, Snape MD, Song R, Woods D, Screaton G, Gilbert SC, Voysey M, Pollard AJ, and Lambe T
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- Adult, ChAdOx1 nCoV-19, Female, Humans, Leukocytes, Mononuclear immunology, Male, Middle Aged, Time Factors, United Kingdom, COVID-19 Vaccines administration & dosage, Immunogenicity, Vaccine immunology, Randomized Controlled Trials as Topic, Vaccination
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Background: COVID-19 vaccine supply shortages are causing concerns about compromised immunity in some countries as the interval between the first and second dose becomes longer. Conversely, countries with no supply constraints are considering administering a third dose. We assessed the persistence of immunogenicity after a single dose of ChAdOx1 nCoV-19 (AZD1222), immunity after an extended interval (44-45 weeks) between the first and second dose, and response to a third dose as a booster given 28-38 weeks after the second dose., Methods: In this substudy, volunteers aged 18-55 years who were enrolled in the phase 1/2 (COV001) controlled trial in the UK and had received either a single dose or two doses of 5 × 10
10 viral particles were invited back for vaccination. Here we report the reactogenicity and immunogenicity of a delayed second dose (44-45 weeks after first dose) or a third dose of the vaccine (28-38 weeks after second dose). Data from volunteers aged 18-55 years who were enrolled in either the phase 1/2 (COV001) or phase 2/3 (COV002), single-blinded, randomised controlled trials of ChAdOx1 nCoV-19 and who had previously received a single dose or two doses of 5 × 1010 viral particles are used for comparison purposes. COV001 is registered with ClinicalTrials.gov, NCT04324606, and ISRCTN, 15281137, and COV002 is registered with ClinicalTrials.gov, NCT04400838, and ISRCTN, 15281137, and both are continuing but not recruiting., Findings: Between March 11 and 21, 2021, 90 participants were enrolled in the third-dose boost substudy, of whom 80 (89%) were assessable for reactogenicity, 75 (83%) were assessable for evaluation of antibodies, and 15 (17%) were assessable for T-cells responses. The two-dose cohort comprised 321 participants who had reactogenicity data (with prime-boost interval of 8-12 weeks: 267 [83%] of 321; 15-25 weeks: 24 [7%]; or 44-45 weeks: 30 [9%]) and 261 who had immunogenicity data (interval of 8-12 weeks: 115 [44%] of 261; 15-25 weeks: 116 [44%]; and 44-45 weeks: 30 [11%]). 480 participants from the single-dose cohort were assessable for immunogenicity up to 44-45 weeks after vaccination. Antibody titres after a single dose measured approximately 320 days after vaccination remained higher than the titres measured at baseline (geometric mean titre of 66·00 ELISA units [EUs; 95% CI 47·83-91·08] vs 1·75 EUs [1·60-1·93]). 32 participants received a late second dose of vaccine 44-45 weeks after the first dose, of whom 30 were included in immunogenicity and reactogenicity analyses. Antibody titres were higher 28 days after vaccination in those with a longer interval between first and second dose than for those with a short interval (median total IgG titre: 923 EUs [IQR 525-1764] with an 8-12 week interval; 1860 EUs [917-4934] with a 15-25 week interval; and 3738 EUs [1824-6625] with a 44-45 week interval). Among participants who received a third dose of vaccine, antibody titres (measured in 73 [81%] participants for whom samples were available) were significantly higher 28 days after a third dose (median total IgG titre: 3746 EUs [IQR 2047-6420]) than 28 days after a second dose (median 1792 EUs [IQR 899-4634]; Wilcoxon signed rank test p=0·0043). T-cell responses were also boosted after a third dose (median response increased from 200 spot forming units [SFUs] per million peripheral blood mononuclear cells [PBMCs; IQR 127-389] immediately before the third dose to 399 SFUs per milion PBMCs [314-662] by day 28 after the third dose; Wilcoxon signed rank test p=0·012). Reactogenicity after a late second dose or a third dose was lower than reactogenicity after a first dose., Interpretation: An extended interval before the second dose of ChAdOx1 nCoV-19 leads to increased antibody titres. A third dose of ChAdOx1 nCoV-19 induces antibodies to a level that correlates with high efficacy after second dose and boosts T-cell responses., Funding: UK Research and Innovation, Engineering and Physical Sciences Research Council, National Institute for Health Research, Coalition for Epidemic Preparedness Innovations, National Institute for Health Research Oxford Biomedical Research Centre, Chinese Academy of Medical Sciences Innovation Fund for Medical Science, Thames Valley and South Midlands NIHR Clinical Research Network, AstraZeneca, and Wellcome., Competing Interests: Declaration of interests SCG and AVSH are cofounders of and shareholders in Vaccitech (collaborators in the early development of ChAdOx1 nCoV-19) and named as inventors on a patent covering use of ChAdOx1-vectored vaccines (PCT/GB2012/000467) and a patent application covering this SARS-CoV-2 vaccine (SCG only). TL is named as an inventor on a patent covering use of ChAdOx1-vectored vaccines (PCT/GB2012/000467) and was a consultant to Vaccitech. PMF is a consultant to Vaccitech. AJP is chair of the UK Department of Health and Social Care's Joint Committee on Vaccination and Immunisation, but does not participate in policy advice on coronavirus vaccines, and is a member of the WHO Strategic Advisory Group of Experts (SAGE). AJP is an NIHR Senior Investigator. All other authors declare no competing interests., (Copyright © 2021 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2021
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15. Author Correction: T cell and antibody responses induced by a single dose of ChAdOx1 nCoV-19 (AZD1222) vaccine in a phase 1/2 clinical trial.
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Ewer KJ, Barrett JR, Belij-Rammerstorfer S, Sharpe H, Makinson R, Morter R, Flaxman A, Wright D, Bellamy D, Bittaye M, Dold C, Provine NM, Aboagye J, Fowler J, Silk SE, Alderson J, Aley PK, Angus B, Berrie E, Bibi S, Cicconi P, Clutterbuck EA, Chelysheva I, Folegatti PM, Fuskova M, Green CM, Jenkin D, Kerridge S, Lawrie A, Minassian AM, Moore M, Mujadidi Y, Plested E, Poulton I, Ramasamy MN, Robinson H, Song R, Snape MD, Tarrant R, Voysey M, Watson MEE, Douglas AD, Hill AVS, Gilbert SC, Pollard AJ, and Lambe T
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- 2021
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