Efficient Transmission of Swine‐Adapted but Not Wholly Avian Influenza Viruses among Pigs and from Pigs to Ferrets

Abstract

Our data indicate that swine-adapted influenza viruses spread readily among pigs and from pigs to other susceptible mammalians and support the notion that AIVs undergo genetic adaptation to efficiently cross the species barrier. Our transmission models hold potential to study the factors that lead to the generation of pandemic influenza viruses.