UW question: transmission of the influenza was originally thought to occur only through contact with poultry, but during the outbreak, sustained human-to-human transmission was observed. What is responsible for the infectivity of the virus in humans? ---genetic reassortment
If the influenza can spread from poultry to human, I think the HA and NA should target on both human and poultry cells. But why can't it spread from human to human?
If the influenza can spread from poultry to human, I think the HA and NA should target on both human and poultry cells. But why can't it spread from human to human?