Effectiveness of antenatal group HIV voluntary counseling and testing services in rural India.

This study assessed HIV attitudes among pregnant women attending antenatal clinics in the Namakkal district of Tamilnadu, India, as well as HIV knowledge before and after group counseling sessions. Two hundred thirteen women (97%) attending five antenatal clinics in July 2004 accepted HIV counseling and testing and completed precounseling and postcounseling questionnaires. Although the majority of women had heard of HIV, precounseling knowledge was low (mean precounseling score; 6.9/18, SD: 4.53), with scores correlating with the women's educational level and the number of sources from which they had received information about HIV. Posttest scores increased by 21%, however, understanding of modalities to prevent HIV infection remained poor. Group counseling sessions achieve small gains in HIV knowledge, but there is a continued need for ongoing and multifaceted HIV education in rural India.     

The use of dried blood spots on filter paper for the diagnosis of HIV-1 in infants born to HIV seropositive women

Polymerase chain reaction (PCR) is the most sensitive test to diagnose HIV-1 infection among infants born to HIV seropositive mothers. The purpose of this study was to evaluate the use of dried blood spot (DBS) specimens for PCR and to compare it with whole-blood stored in tubes for HIV-1 DNA PCR. Five hundred and seventy-seven whole-blood infant samples were tested using HIV-1 qualitative in-house nested DNA PCR. Three hundred and fifty-nine samples were from infants at 48 hours of birth and 218 samples at second month. All positive samples tested from whole-blood and every fifth negative sample were coated onto filter paper. DNA was extracted from the filter paper and was amplified using in-house nested PCR. Among the whole-blood samples tested using HIV-1 DNA PCR, 19 of 359 (5.29%) samples were HIV-1 positive and 340 (94.7%) were negative at 48 hours of birth. At second month, 19 (8.7%) of the 218 samples were positive and 199 (91.2%) were negative. Using dried filter paper, 18 samples (95%) tested positive from 19 positive samples (using whole-blood) and 1 tested negative at 48 hours of birth. The 68 negative samples tested using whole-blood were also negative in the DBS test (sensitivity 95% and specificity 100%). At second month, 19 were positive and 40 samples (every fifth sample of 199) were negative (sensitivity and specificity, 100%). PCR performed using DNA extracted from filter paper permits the diagnosis of HIV-1 infection among infants born to HIV-1 seropositive mothers. This assay is simple, rapid, sensitive and specific and can be used in resource limited settings.