| multiple routes of hepatitis c virus transmission among injection drug users in hai phong, northern vietnam. | to identify hepatitis c virus (hcv) transmission routes among injection drug users in northern vietnam, plasma samples were collected from 486 drug users in hai phong. plasma viral rna was extracted from 323 (66.5%) samples that were positive for anti-hcv antibodies. portions of the hcv 5'-untranslated (5'utr)-core and ns5b genes were amplified by reverse-transcriptase polymerase chain reaction, sequenced directly, and genotyped in 194 and 195 specimens, respectively. both regions were genotyped ... | 2010 | 20572071 |