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The vaccination changed the profile of rotavirus infection with the increase of non-rotavirus A species diagnosis in one-week-old diarrheic piglets.
Dall Agnol, Alais M; Guimarães, Nathália S; Leme, Raquel A; da Costa, Arthur R; Alfieri, Alice F; Alfieri, Amauri A.
Afiliação
  • Dall Agnol AM; Laboratory of Animal Virology, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
  • Guimarães NS; Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
  • Leme RA; Laboratory of Animal Virology, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
  • da Costa AR; Laboratory of Animal Virology, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
  • Alfieri AF; Laboratory of Bacteriology, Department of Preventive Veterinary Medicine, Universidade Estadual de Londrina, Londrina, Brazil.
  • Alfieri AA; Laboratory of Animal Virology, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
Braz J Microbiol ; 55(1): 991-996, 2024 Mar.
Article em En | MEDLINE | ID: mdl-38280092
ABSTRACT
Porcine rotavirus (RV) is a major viral agent associated with severe diarrhea in newborn piglets. RVA, RVB, RVC, and RVH are RV species that have already been identified in pigs. RVA is considered the most prevalent and relevant virus in pig production worldwide. This study aimed to evaluate the frequency of RV infection associated with diarrhea in suckling piglets from regular RVA-vaccinated Brazilian pig herds between 2015 and 2021. Therefore, 511 diarrheic fecal samples were collected from suckling piglets aged up to 3 weeks from 112 pig farms located in three main Brazilian pork production regions. All piglets were born to RVA-vaccinated sows. The nucleic acids of RVA, RVC, and RVH were investigated by RT-PCR assays and RVB by semi-nested RT-PCR assay. Of the diarrheic fecal samples analyzed, 221/511 (43.3%) were positive for at least one of the RV species. Regarding the distribution of RV species among the positive fecal samples that presented with only one RV species, 99 (44.8%), 63 (28.5%), and 45 (20.4%) were identified as RVB, RVC, and RVA, respectively. RVH was not identified in diarrheic piglets with a single infection. More than one RV species was identified in 14/221 (6.3%) of the diarrheic fecal samples evaluated. Co-detection of RVB + RVH (11/221; 5.0%), RVA + RVB (1/221; 0.4%), RVA + RVC (1/221; 0.4%), and RVB + RVC (1/221; 0.4%) was identified in fecal samples. The results demonstrated a significant increase in the RVC and, mainly, RVB detection rates in single infections. This study allowed us to characterize the importance of other RV species, in addition to RVA, in the etiology of neonatal diarrhea in piglets from pig herds with a regular vaccination program for RVA diarrhea control and prophylaxis.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Infecções por Rotavirus / Doenças dos Suínos / Vírus / Rotavirus Tipo de estudo: Diagnostic_studies Limite: Animals Idioma: En Revista: Braz J Microbiol Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Infecções por Rotavirus / Doenças dos Suínos / Vírus / Rotavirus Tipo de estudo: Diagnostic_studies Limite: Animals Idioma: En Revista: Braz J Microbiol Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil