Document Detail

Retrospective serological survey of influenza viruses in backyard pigs from Mexico City.
MedLine Citation:
PMID:  23210521     Owner:  NLM     Status:  Publisher    
BACKGROUND: In the present study, we analyzed the presence of antibodies to four different influenza viruses (pH1N1, hH1N1, swH1N1, and swH3N2) in the sera of 2094 backyard pigs from Mexico City. The sera were obtained between 2000 and 2009. OBJECTIVES: The aim of this study was to perform a retrospective analysis of the 2000-2009 period to determine the seroprevalence of antibodies against pH1N1, hH1N1, swH1N1, and swH3N2 viruses in sera obtained from backyard pigs in Mexico City. METHODS: Antibody detection was conducted with hemagglutination inhibition assay (HI) using four influenza viruses. We used linear regression to analyze the tendency of antibody serum titers throughout the aforementioned span. RESULTS: We observed that the antibody titers for the pH1N1, swH1N1, and swH3N2 viruses tended to diminish over the study period, whereas the antibodies to hH1N1 remained at low prevalence for the duration of the years analyzed in this study. A non-significant correlation (P > 0·05) between antibody titers for pH1N1 and swH1N1 viruses was observed (0·04). It contrasts with the significance of the correlation (0·43) observed between the swH1N1 and swH3N2 viruses (P < 0·01). CONCLUSIONS: Our findings showed no cross-antigenicity in the antibody response against the same subtype. Antibodies against pH1N1 virus were observed throughout the 10-year study span, implying that annual strains shared some common features with the pH1N1 virus since 2000, which would then be capable of supporting the ongoing presence of these antibodies.
Manuel Saavedra-Montañez; Víctor Carrera-Aguirre; Héctor Castillo-Juárez; Francisco Rivera-Benitez; Karina Rosas-Estrada; Evelyn Pulido-Camarillo; Carmen Mercado-García; Rosalba Carreón-Nápoles; Mario Haro-Tirado; Dora P Rosete; Carlos Cabello; María E Manjarrez; Iván Sánchez-Betancourt; Humberto Ramírez-Mendoza
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-5
Journal Detail:
Title:  Influenza and other respiratory viruses     Volume:  -     ISSN:  1750-2659     ISO Abbreviation:  Influenza Other Respi Viruses     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101304007     Medline TA:  Influenza Other Respi Viruses     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 Blackwell Publishing Ltd.
Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, CP 04510, Distrito Federal, México.
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