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English

Nevertheless, the series of serological differences found are very striking, since out of the 655 individuals that were seropositive in 1987, we noted that 276 individuals remained positive, while 50 individuals (7.63%) became negative.

Portuguese

Entretanto, as séries de diferenças sorológicas foram muito marcantes, uma vez que dos 655 indivíduos que testaram positivos em 1987, 276 permaneceram positivos, enquanto 50 (7.63%) tornaram-se soronegativos.