What Are the Symptoms of Swine Influenza Virus in Pigs?
Swine flu is a respiratory disease caused by the type A influenza virus that primarily affects pigs. The disease is rarely spread to humans but, according to the CDC, pigs can catch both human and avian strains of influenza. There are several different strains of swine flu, as of 2009, H1N1 was the most commonly isolated strain.