Virulence of rimantadine-resistant human influenza A (H3N2) viruses in ferrets.

Sweet, C; Hayden, F G; Jakeman, K J; Grambas, S; Hay, A J · J Infect Dis · 1991

basic_science · Level V

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Abstract

The influence of rimantadine-resistance mutations on the virulence of human H3N2 viruses in ferrets was examined. The similarities in virulence of the drug-resistant mutants with single amino acid substitutions at three different locations, 27, 30, and 31, within the M2 sequence and their corresponding sensitive wild-type isolates contrasted with differences in virulence between the three pairs of viruses. These data provide further evidence that rimantadine-resistant viruses that emerge during treatment of patients with the drug are unaltered both in their growth characteristics and virulence.

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