title: Historical prevalence and distribution of avian influenza virus A(H7N9) among wild birds.
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.
authors.forename: Sarah H
authors.initials: SH
authors.lastname: Olson
authors.forename: Martin
authors.initials: M
authors.lastname: Gilbert
authors.forename: Ming Chu
authors.initials: MC
authors.lastname: Cheng
authors.forename: Jonna A K
authors.initials: JA
authors.lastname: Mazet
authors.forename: Damien O
authors.initials: DO
authors.lastname: Joly
mesh_terms: D000818:Animals; D000835:Animals, Wild; D001717:Birds / Q000821:virology; D014943:Global Health; D064766:Influenza A Virus, H7N9 Subtype / Q000235:genetics* / Q000302:isolation & purification; D005585:Influenza in Birds / Q000453:epidemiology*; D015995:Prevalence; D062486:Public Health Surveillance
keywords: expedited, population surveillance; influenza, influenza A virus, H7N9 subtype, wild animals, wild birds, avian, Asia, viruses, zoonoses, viruses