| sequence and phylogenetic analyses of hiv-1 infection in vietnam: subtype e in commercial sex workers (csw) and injection drug users (idu). | more than 4,000 persons with human immunodeficiency virus type 1 (hiv-1) infection have been identified in vietnam through sentinel surveillance since 1990, when the first case of hiv-1 infection was diagnosed in a young woman in ho chi minh city. currently, the estimated hiv-1 seroprevalences of 10% for injection drug users (idu) and 3% for female commercial sex workers (csw) in vietnam are comparable to those observed in the same risk groups in thailand five years ago. to clarify if concurrent ... | 1997 | 9449528 |