Abstract
Summary
The isolation of 31 strains of influenza virus, type C, from recruits at Great Lakes Naval Training Center during the winter of 1953-54 is reported. A significant increase in hemagglutination-inhibition or complement-fixation antibody titer occurred in the blood sera of 27 of the 29 individuals from whom bleedings had been obtained. There has been no apparent change in the antigenic character of the influenza C viruses since its original isolation.
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