Thongchai TaechowisanRuengpung SutthentSuda LouisirirotchanakulPilaipan PuthavathanaChantapong WasiSilpakorn UniversityMahidol University2018-07-042018-07-041996-12-01Asian Pacific Journal of Allergy and Immunology. Vol.14, No.2 (1996), 121-1230125877X2-s2.0-0030435219https://repository.li.mahidol.ac.th/handle/123456789/17691Previous molecular epidemiological studies show that at least 2 subtypes of HIV-1 circulate in Thailand. HIV-1 subtype B or Thai genotype B was associated with an early epidemic and was prevalent in intravenous drug users. Meanwhile, HIV-1 subtype E or Thai genotype A was becoming widespread among heterosexuals. We studied the HIV subtypes of 161 HIV-1 seropositive pregnant women. Of these, 143 pregnant patients (88.8%) tested positive for subtype E alone and 8 women (5.0%) had evidence of infection with subtype B alone. There was serologic evidence of infection with a mixture of subtypes in 7 women while the infecting subtype could not be identified in the remaining 3 women. This result agrees with previous information that subtype E predominates in Thai heterosexuals.Mahidol UniversityMedicineArticleSCOPUS