Serological evidence of swine influenza in Brazil

• Published in: Influenza and other respiratory viruses Vol. 7; no. 2; pp. 109 - 112
• Main Authors: Rajão, Daniela S., Alves, Fabiana, Del Puerto, Helen L., Braz, Gissandra F., Oliveira, Fernanda G., Ciacci‐Zanella, Janice R., Schaefer, Rejane, dos Reis, Jenner K. P., Guedes, Roberto M. C., Lobato, Zélia I. P., Leite, Rômulo C.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01-03-2013
• Subjects: Animals; Antibodies; Antibodies, Viral - blood; Brazil - epidemiology; Hemagglutination inhibition test; Hemagglutination Inhibition Tests; herd; influenza; Influenza A Virus, H1N1 Subtype - immunology; Influenza A Virus, H3N2 Subtype - immunology; Orthomyxoviridae Infections - epidemiology; Orthomyxoviridae Infections - veterinary; Orthomyxoviridae Infections - virology; pigs; Seroepidemiologic Studies; Short; Swine; Swine Diseases - epidemiology; Swine Diseases - virology; swine influenza virus; Brazil
• ISSN: 1750-2640; 1750-2659
• DOI: 10.1111/j.1750-2659.2012.00366.x

Please cite this paper as: Rajão et al. (2013). Serological evidence of swine influenza in Brazil. Influenza and Other Respiratory Viruses 7(2), 109–112.
The aim of this work was to detect serum antibodies specific to influenza viruses in swine in Brazil. Serum samples of 355 pigs from 17 herds in Minas Gerais state were tested by hemagglutination inhibition (HI) for antibodies against H1N1 swine (SIV) and human influenza viruses, and H3N2 SIV. HI revealed that 158 animals (44·5%) and 11 herds (64·7%) were positive for H1N1 SIV, 36 animals (10·1%) and four herds (23·5%) were positive for H3N2 SIV, and 136 animals (38·3%) and 10 herds (58·8%) were positive for H1N1 human. This study indicates that swine influenza is disseminated throughout Minas Gerais state, Brazil.