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13 results on '"Ribeiro, Marcio G."'

4. Occurrence of Salmonella spp. in fecal samples from foals with and without diarrhea in the state of São Paulo: microbiological diagnosis, antimicrobial susceptibility profile, and molecular detection

Author

Braga, Pollyana R.C., primary, Basso, Roberta M., additional, Martins, Lorrayne S.A., additional, Ribeiro, Marcio G., additional, Amarante, Ariadne F., additional, Casas, Monique R.T., additional, Nassar, Alessandra F.C., additional, Pereira, Juliano G., additional, Pantoja, José Carlos F., additional, Cerri, Fabricio M., additional, Possebon, Fábio S., additional, Oliveira-Filho, José P., additional, and Borges, Alexandre S., additional

Published
2023
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8. Vaccinia virus zoonotic infection, Sao Paulo State, Brazil

Author

Megid, Jane, Borges, Iara A., Abrahao, Jonatas S., Trindade, Giliane S., Appolinario, Camila M., Ribeiro, Marcio G., Allendorf, Susan D., Antunes, Joao Marcelo A.P., Silva-Fernandes, Andre T., and Kroon, Erna G.

Subjects
Dairy cattle -- Health aspects, Zoonoses -- Health aspects, Vaccinia -- Health aspects, Health
Abstract

To the Editor: Since 1999, vaccinia virus (VACV) has been isolated frequently from dairy cattle and humans (1-3). During bovine vaccinia outbreaks, VACV can be transmitted to farmers and those [...]

Published
2012
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10. Diarréia em bezerros da raça Nelore criados extensivamente: estudo clínico e etiológico

Author

Oliveira Filho, José P., Silva, Daniel P.G., Pacheco, Marcelo D., Mascarini, Luciene M., Ribeiro, Marcio G., Alfieri, Amauri A., Alfieri, Alice F., Stipp, Danilo T., Barros, Breno J.P., and Borges, Alexandre S.

Subjects
enteropathogens, Bezerros de corte, entero-patógenos, animal diseases, Nelore, etiology, parasitic diseases, diarréia, Beef calves, diarrhea, etiologia
Abstract

A diarréia é considerada uma das principais causas de morbidade e mortalidade de bezerros neonatos. Foram colhidas 100 amostras fecais diarréicas e 30 amostras não diarréicas (grupo controle), de bezerros Nelore com até nove semanas de idade com o objetivo de detectar os enteropatógenos Salmonella spp., Escherichia coli, rotavírus, coronavírus, Cryptosporidium spp. e ovos de helmintos. Enteropatógenos foram detectados em 79,0% das amostras diarréicas e em 70,0% das amostras não-diarréicas. No grupo de bezerros com diarréia, E. coli (69,0%) foi o agente mais freqüentemente isolado, seguido de Cryptosporidium spp. (30,0%), coronavírus (16,0%) e rotavírus (11,0%). No grupo controle, E. coli, Cryptosporidium spp. e coronavírus foram detectados, respectivamente, em 66,7%, 10,0% e 3,3% das amostras. Salmonella spp. e ovos de estrongilídeos não foram encontrados nos dois grupos avaliados. A fímbria K99 foi identificada exclusivamente nas linhagens de E. coli isoladas de bezerros com diarréia (5,8%). Entre os antimicrobianos avaliados "in vitro" a enrofloxacina, a norfloxacina e a gentamicina foram os mais efetivos. O peso dos bezerros aos 210 dias de idade não apresentou diferença significativa entre os animais com e sem diarréia. Diarrhea is considered as one of the main causes of morbidity and mortality in neonates calves. Fecal samples from 100 diarrheic and 30 non-diarrheic (control group) Nelore calves less than 9 weeks old were collected for Salmonella spp., Escherichia coli, rotavirus, coronavirus, Cryptosporidium spp., and for helminth eggs investigation. Enteropathogens were detected in 79.0% diarrheic samples and 70.0% non-diarrheic samples. Among diarrheic calves, Escherichia coli (69.0%) was the most common agent found, following by Cryptosporidium spp. (30.0%), coronavirus (16.0%), and rotavirus (11.0%). In the control group, E. coli, Cryptosporidium spp. and coronavirus were detected in 66.7%, 10.0% and 3.3% of the samples, respectively. Salmonella spp. and strongylids were not found in any of the calves from either group. The K99 fimbrial only was detected in E. coli strains from diarrheic calves (5.8%). Enrofloxacin, norfloxacin, and gentamicin were the most effective among the antimicrobials tested. The weight of 210-day-old calves did not show statistic differences between diarrheic and non-diarrheic calves.

Published
2007

11. Evaluation of Three Formulations of Culture Media for Isolation ofBrucellaspp. regarding Their Ability to Inhibit the Growth of Contaminating Organisms

Author

Vicente, Acácia F., primary, Antunes, João M. A. P., additional, Lara, Gustavo H. B., additional, Mioni, Mateus S. R., additional, Allendorf, Susan D., additional, Peres, Marina G., additional, Appolinário, Camila M., additional, Listoni, Fernando J. P., additional, Ribeiro, Marcio G., additional, and Megid, Jane, additional

Published
2014
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13. Evaluation of Three Formulations of Culture Media for Isolation of Brucella spp. regarding Their Ability to Inhibit the Growth of Contaminating Organisms.

Author

Vicente, Acácia F., Antunes, João M. A. P., Lara, Gustavo H. B., Mioni, Mateus S. R., Allendorf, Susan D., Peres, Marina G., Appolinário, Camila M., Listoni, Fernando J. P., Ribeiro, Marcio G., and Megid, Jane

Abstract

Three culture media (Brucella agar, Farrell medium, and CITA) were compared for their effectiveness in inhibiting contamination and for isolating Brucella spp. One hundred lymph nodes from pigs (n = 50) and wild boars (n = 50) with lymphadenitis were collected in slaughterhouses in the State of São Paulo and were assessed on these three selective media for Brucella spp. All of the samples were negative for Brucella spp. on the three culture media. On the agar medium, fungal (70 plates) and Gram-positive bacterial (59 plates) contaminants were observed; in the CITA medium, the absence of fungal and Gram-positive bacteria on 15 plates was observed; no bacterial or fungal growth was observed on the Farrell media. The results demonstrated that the CITA and Farrell media inhibited the growth of contaminants better than the Brucella agar. [ABSTRACT FROM AUTHOR]

Published
2014
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