Abstract
The minimal inhibitory concentrations of Virazole against 32 mean tissue culture infective doses of three type A influenza strains including type A/England/42/72 (H3N2) and a type B strain in tissue culture were 0.1 and 0.05 μg/ml, respectively. The growth inhibition pattern by various Virazole concentrations of type A virus was similar to that of the type B virus. Virazole appears to be slightly more potent against the A/England/42/72 strain than are other antiinfluenzal agents.
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