Infection and vaccination of pigs with influenza A/New Jersey/8/76 (Hsw1N1) virus.

Pigs were infected and had mild signs of illness when exposed to influenza A/New Jersey/8/76 (Hsw1N1) virus. Virus was recovered for up to eight days after exposure. The virus was readily transmitted to susceptible pen mates. Vaccination with inactivated whole-virus vaccine did not provide protection against infection or disease. There was some protection against challenge when the pigs were vaccinated with a temperature-sensitive strain of influenza A/New Jersey/8/76 virus.