A considerable number of goats clinically suspected to suffer from paratuberculosis were reported in the geographic area of Vouzela. Ten suspected animals were studied in our laboratory. Hematological, histopathological and bacteriological tests confirmed the presence of paratuberculosis in these animals. As a high number of animals showed these clinical symptoms we decided to carry out a serological screening in all the small ruminants within the referred area. The total number of animals examined was 4,122 (2,635 goats and 1,487 sheep). Seroreactive animals totaled 10% in goats and 10.2% in sheep. These results are interesting because symptoms of paratuberculosis were only observed in goats, whereas sheep were asymptomatic.