Drug Sensitivity of Human Immunodeficiency Virus Type 1 Isolates after Ribavirin Therapy

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Abstract
The antiviral agent ribavirin is effective against several virally induced diseases, and there is evidence that it might prove useful against human immunodeficiency virus type 1 (HIV-1) infection. Thus, there is interest in studying the resistance level of HIV-1 isolates to ribavirin following drug therapy. Low-passage clinical strains of HIV-1 were isolated from 3 patients undergoing treatment with ribavirin for 5–9 months. No significant changes in drug sensitivity were seen for sequential virus samples obtained before, during, and after antiviral therapy. These observations suggest that the appearance of a resistant phenotype is not induced by treatment with ribavirin in HIV-1– infected persons.

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