[Oocysts of the genus Cryptosporidium in domiciliated dogs from the city of Campos dos Goytacazes, the State of Rio de Janeiro]. / Oocistos do gênero Cryptosporidium em cães domiciliados na cidade de Campos dos Goytacazes, Estado do Rio de Janeiro.

This study had the objective of determining the occurrence of Cryptosporidium oocysts in domiciliated dogs from Campos dos Goytacazes City on Rio de Janeiro State. Feces samples were collected from 100 dogs, male and female, of different races, with age varying from 15 days to 15 years old and clinically healthy. These samples were analyzed by using the modified Ziehl-Neelsen technique. Among the dogs, 40% of them shed oocysts in their feces. In conclusion, there is a high number of asymptomatic domiciliated dogs in the City of Campos dos Goytacazes, that maintain the environmental contamination and provide infection for sensible animals.