All of the following methods are used for the diagnosis of HIV infection in a 2 month old child,: (A) DNA-PCR., (B) Viral culture., (C) HIV ELISA, (D) p24 antigen assay
Answer is C. Anti-HIV antibody detection by ELISA or any other method is done only after 18 months of birth when all maternal antibodies would have disappeared.
HIV diagnosis <18 months: (i) HIV DNA detection (best), (ii) p-24 antigen, (iii) HIV RNA detection, (iv) virus isolation