title: Serological evidence of swine influenza in Brazil.
abstract: 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.
authors.affiliation: Preventive Veterinary Medicine Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil 31270-901. rajao.ds@gmail.com
authors.forename: Daniela S
authors.initials: DS
authors.lastname: Rajão
authors.forename: Fabiana
authors.initials: F
authors.lastname: Alves
authors.forename: Helen L
authors.initials: HL
authors.lastname: Del Puerto
authors.forename: Gissandra F
authors.initials: GF
authors.lastname: Braz
authors.forename: Fernanda G
authors.initials: FG
authors.lastname: Oliveira
authors.forename: Janice R
authors.initials: JR
authors.lastname: Ciacci-Zanella
authors.forename: Rejane
authors.initials: R
authors.lastname: Schaefer
authors.forename: Jenner K P
authors.initials: JK
authors.lastname: dos Reis
authors.forename: Roberto M C
authors.initials: RM
authors.lastname: Guedes
authors.forename: Zélia I P
authors.initials: ZI
authors.lastname: Lobato
authors.forename: Rômulo C
authors.initials: RC
authors.lastname: Leite
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000097:blood*; D001938:Brazil / Q000453:epidemiology; D006385:Hemagglutination Inhibition Tests; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology*; D053122:Influenza A Virus, H3N2 Subtype / Q000276:immunology*; D009976:Orthomyxoviridae Infections / Q000453:epidemiology / Q000662:veterinary* / Q000821:virology; D016036:Seroepidemiologic Studies; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology* / Q000821:virology*
chemical_list: D000914:Antibodies, Viral