Historical prevalence and distribution of avian influenza virus A(H7N9) among wild birds

Emerg Infect Dis. 2013 Dec;19(12):2031-3. doi: 10.3201/eid1912.130649.

Abstract

We examined 48 published studies for which sample sizes could be ascertained to determine the historic prevalence of influenza A(H7N9) virus in wild bird populations and reviewed GenBank data to further establish its distribution. Low prevalence (0.0093%) in Asia suggests > 30,000 samples would be required to detect the H7N9 subtype in wild birds.

Keywords: expedited, population surveillance; influenza, influenza A virus, H7N9 subtype, wild animals, wild birds, avian, Asia, viruses, zoonoses, viruses.

Publication types

  • Meta-Analysis
  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Animals, Wild
  • Birds / virology
  • Global Health
  • Influenza A Virus, H7N9 Subtype / genetics*
  • Influenza A Virus, H7N9 Subtype / isolation & purification
  • Influenza in Birds / epidemiology*
  • Prevalence
  • Public Health Surveillance