In March 2017, highly pathogenic avian influenza A(H7N9) was detected at 2 poultry farms in Tennessee, USA. Surveillance data and genetic analyses indicated multiple introductions of low pathogenicity avian influenza virus before mutation to high pathogenicity and interfarm transmission. Poultry surveillance should continue because low pathogenicity viruses circulate and spill over into commercial poultry.
All Keywords
【저자키워드】 viruses, respiratory infections, zoonoses, Mutation, Influenza, Transmission, Phylogenetic analysis, United States, Tennessee, chicken, H7N9, poultry, farm, wild bird, Iowa, Alabama, Highly pathogenic avian influenza virus, HPAI virus, Wyoming, commercial farm, backyard farm,
【저자키워드】 viruses, respiratory infections, zoonoses, Mutation, Influenza, Transmission, Phylogenetic analysis, United States, Tennessee, chicken, H7N9, poultry, farm, wild bird, Iowa, Alabama, Highly pathogenic avian influenza virus, HPAI virus, Wyoming, commercial farm, backyard farm,