title: HIV-(1/2) indeterminate western blot results: follow-up of asymptomatic blood donors in belo horizonte, minas gerais, brazil
abstract: The clinical and public health importance of indeterminate results in HIV-(1/2) testing is still difficult to evaluate in volunteer blood donors. At Fundacao Hemominas, HIV-(1/2) ELISA is used as the screening test and, if reactive, is followed by Western blot (WB). We have evaluated 84 blood donors who had repeatedly reactive ELISA tests for HIV-(1/2), but indeterminate WB results. Sixteen of the 84 donors (19.0%) had history of sexually transmitted diseases; 18/84 (21.4%) informed receiving or paying for sex; 3/84 (3.6%) had homosexual contact; 2/26 women (7.6%) had past history of multiple illegal abortions and 3/84 (3.6%) had been previously transfused. Four out of 62 donors (6.5%) had positive anti-nuclear factor (Hep2), with titles up to 1:640. Parasitological examination of the stool revealed eggs of S. mansoni in 4/62 (6.4%) donors and other parasites in 8/62 (12.9%). Five (5.9%) of the subjects presented overt seroconversion for HIV-(1/2), 43/84 (51.2%) had negative results on the last visit, while 36/84 (42.9%) remained WB indeterminate. Although some conditions could be found associated with the HIV-(1/2) indeterminate WB results and many donors had past of risky behavior, the significance of the majority of the results remains to be determined.
authors.affiliation: Fundacao Hemominas, Belo Horizonte, Minas Gerais, 30130-110, Brazil.
authors.initials: AB
authors.lastname: Carneiro-Proietti
authors.initials: IW
authors.lastname: Cunha
authors.initials: MM
authors.lastname: Souza
authors.initials: DR
authors.lastname: Oliveira
authors.initials: NM
authors.lastname: Mesquita
authors.initials: CA
authors.lastname: Andrade
authors.initials: BC
authors.lastname: Catalan-Soares
authors.initials: MV
authors.lastname: Lima-Martins
authors.initials: FA
authors.lastname: Proietti