Prolonged intermittent virus shedding during an outbreak of canine influenza A H3N2 virus infection in dogs in three Chicago area shelters: 16 cases (March to May 2015).

OBJECTIVE To estimate an appropriate isolation period for dogs infected with canine influenza A H3N2 virus on the basis of the duration of virus shedding. DESIGN Retrospective case series. ANIMALS 16 dogs, from 3 Chicago area shelters, naturally infected with canine influenza A H3N2 virus.