Investigations on the involvement of swine influenza A virus (Hsw1N1) in the influenza outbreak recorded in a town of Romania during the 1976--1977 winter season.

Seroepidemiological investigations performed with 1,620 serum samples and serodiagnostic tests with 166 paired sera demonstrated that swine influenza virus type A/New Jersey 8/76 (Hsw1N1) played no role in the epidemiology of human influenza in a large town of Romania during 1977.