Differentiation of dual seropositivity to HIV 1 and HIV 2 in Ghanaian sera using line immunoassay (INNOLIA).

Two hundred serum samples from AIDS-like patients, blood donors and miscellaneous patients were screened by ELISA for HIV 1-2. Repeatedly positive samples were confirmed using the Western Blot (WB). Twenty samples that were dual positive were further analysed by Innolia, which contains synthetic or recombinant antigens in HIV-1 and HIV-2. Only 5 of the samples were dual positive. The need for further analysis of dual WB results is re-emphasized.