Indian J Sex Transm Dis Indian J Sex Transm Dis
Official Publication of the Indian Association for the Study of Sexually Transmitted Diseases
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ORIGINAL ARTICLE
Year : 2011  |  Volume : 32  |  Issue : 2  |  Page : 99-102

Diagnosis of HIV-1 infection in infants using dried blood spots in Tamil Nadu, South India


Department of Experimental Medicine, The Tamil Nadu Dr. M G R Medical University, Chennai, India

Correspondence Address:
D Anitha
Department of Experimental Medicine, The Tamil Nadu Dr. M G R Medical University, Chennai - 600 032
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0253-7184.85413

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Introduction: Diagnosis of HIV infection in infants is difficult due to the presence of maternal antibodies; only nucleic acid assays are very helpful in early detection. Filter papers are especially useful for blood collection in resource-poor settings with limited access to diagnostic facilities. Materials & Methods: DBS samples were collected from the infants born to HIV seropositive mothers who had received single dose nevirapine at onset of labor. The samples were directly spotted onto the Whatman 903 cards from heel, big toe or finger prick depending on the age of the infants. A total of 766 infant samples were collected on dried blood spots (DBS) and transported to the Department of Experimental Medicine (DEM), Chennai, for testing from different government hospitals of rural and urban parts of Tamil Nadu, South India. According to National AIDS Control Organization's (NACO) protocol DNA was extracted from all these DBS and PCR was performed using the Roche kit version 1.5. Results: Fifteen infants were found to be HIV positive and 751 were HIV negative; all these 15 positive infants and 49 negative infants who were in the age group between 10 and 18 months were repeated with another DBS and compared with whole blood. The DBS results were concordant with the whole blood method and the sensitivity and specificity were 100%.


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