The pig as an intermediate host for influenza A viruses between birds and humans

IH Brown - International Congress Series, 2001 - Elsevier
Swine influenza (SI) was first observed at the time of the pandemic in humans in 1918, and
since that time, subtypes H1N1 and H3N2 have been widely reported in pigs, frequently
associated with respiratory disease. These include classical swine H1N1, avian-like H1N1
and human-and avian-like H3N2 viruses. Swine husbandry practices influence directly the
evolution of SI viruses through reduced immune pressure and constant availability of
susceptible hosts. The pig has been the leading contender for the role of intermediate host …