| seroprevalence and subtype distribution of hepatitis c virus among blood donors and intravenous drug users in northern/northeastern thailand. | the prevalence of antibodies against hepatitis c virus (hcv) and the distribution pattern of hcv subtypes were analyzed among healthy blood donors and intravenous drug users (ivdus) in northern/northeastern thailand. the prevalence of anti-hcv antibodies was 3.2% (26/820) among blood donors in khon kaen, while it was 90% (71/79) among ivdus in chiang rai. hcv rna was detected in all anti-hcv-positive sera collected from blood donors and ivdus tested, as determined by reverse transcription-pcr an ... | 1999 | 10507992 |