Dog flu spreads to 30 states, worrying pet owners

Parents worry about H1N1.
For pet owners, the rising threat is H3N8 – dog flu – a highly contagious, potentially deadly respiratory infection. It started at a Florida greyhound track and has spread to 30 states. As of last year, 1,079 cases had been confirmed.
H3N8 is a type A influenza. Researchers say it began with horses [...]