Avian influenza at both ends of a migratory flyway: characterizing viral genomic diversity to optimize surveillance plans for North America.

ABSTRACT: Although continental populations of avian influenza viruses are genetically distinct, transcontinental reassortment in low pathogenic avian influenza (LPAI) viruses has been detected in migratory birds. Thus, genomic analyses of LPAI viruses could serve as an approach to prioritize species and regions targeted by North American surveillance activities for foreign origin highly pathogenic avian influenza (HPAI). To assess the applicability of this approach, we conducted a phylogenetic and population genetic analysis of 68 viral genomes isolated from the northern pintail (Anas acuta) at opposite ends of the Pacific migratory flyway in North America. We found limited evidence for Asian LPAI lineages on wintering areas used by northern pintails in California in contrast to a higher frequency o

SUBMITTER: Pearce JM 

PROVIDER: S-EPMC3352445 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature