An epidemic of influenza B in the province of Quebec in the Spring of 1966: laboratory studies.

Laboratory studies of an influenza B epidemic in the Province of Quebec carried out during the spring of 1966 are described. During that period six influenza B strains were isolated. The isolated strains did not differ markedly from previous influenza B strains. The serological studies showed that this epidemic had spread over different parts of the Province of Quebec.The serological studies also showed that an isolated community, such as an armed forces camp, can exhibit an epidemiological pattern different from that obtaining in the whole population.