Antimalarial antibody in relation to seroreactivity for HIV infection in sera from blood donors.

A total of 74 specimens from blood donors showing evidence of HIV infection comprising of 40 positive by both ELISA and Western Blot (true positive), 16 positive by ELISA but negative by Western Blot (false positive) and 18 specimens positive by ELISA but showing indeterminate bands in Western Blot were screened for anti-malarial antibody. The prevalence of antimalarial antibody was noted as 62.5%, 56.3% and 66.6% respectively in these groups. None of these groups had any difference in the prevalence of antimalarial antibody with the group of 60 specimens negative for HIV infection by both ELISA as well as Western Blot (true negative) which had a prevalence of antimalarial antibody as 53.3%. The mean titre of antimalarial antibody in the above categories of specimens positive for HIV infection also did not show any difference with that of true negative group. These findings point out that antimalarial antibody does not influence the serological positivity for HIV infection.