Wild ducks are the reservoir for only a limited number of influenza A subtypes.
Identifieur interne : 001F38 ( Main/Merge ); précédent : 001F37; suivant : 001F39Wild ducks are the reservoir for only a limited number of influenza A subtypes.
Auteurs : G. B. Sharp ; Yoshihiro Kawaoka [États-Unis] ; S. M. Wright ; B. Turner ; V. Hinshaw ; R. G. WebsterSource :
- Epidemiology and Infection [ 0950-2688 ] ; 1993.
Abstract
Analysis of cloacal samples collected from 12,321 wild ducks in Alberta, Canada, from 1976 to 1990 showed influenza A infections to be seasonal, with prevalences increasing as the population became increasingly more dense. Viruses with 3 haemagglutinin (H3, H4, and H6) and 3 neuraminidase subtypes (N2, N6, and N8) were found consistently to infect both adult and juvenile ducks each year, indicating that wild ducks may be a reservoir for these viruses. In contrast, viruses with 7 haemagglutinin (H2, H5, H7, H8, H9, H11, and H12) and 3 neuraminidase subtypes (N1, N3, and N4) were not found for prolonged periods during the study; when they were found, they primarily infected juveniles at moderate levels. Whilst wild ducks appear to perpetuate some influenza A viruses, they apparently do not act as a reservoir for all such viruses.
Url:
PubMed: 8381747
PubMed Central: 2271956
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