Three investigations carried out between 1991 and 1997 and comprising 2,254 individuals from Barcelos have showed a 2.8 to 5% prevalence of confirmed positive serology by means of recombining ELISA and Western Blot.
Tres averiguaciones que se hicieron entre el 1991 y el 1997, involucrando a 2.254 individuos de Barcelos, revelaron prevalencia del 2,8% al 5% de serologías positivas confirmadas con ELISA recombinante y Western Blot.
Três inquéritos feitos entre 1991 e 1997, envolvendo 2.254 indivíduos de Barcelos, mostraram prevalência de 2,8% a 5% de sorologias positivas confirmadas com ELISA recombinante e Western Blot.