[Enterobius vermicularis in preschool children from a suburban area in San Félix, Bolívar State, Venezuela].

To determine the enterobiosis prevalence in preschool children, a study was carried out from may-july 2003, in the SEU "Teresa de la Parra" in San Félix, Bolívar State, Venezuela. Three samples from the perianal region were obtained from every child, by applying the Graham method, and one sample was obtained of the subungucal deposit by scraping and cutting off their finger nails. These samples were preserved in 10% formol and processed by the formol-ether method.

[Prevalence of Blastocystis hominis among food handlers from Caroni municipality, Bolivar State, Venezuela].

A cross-sectional survey was conducted to determine the prevalence of Blastocystis hominis infection in a random sample of apparently healthy food handlers. A total of 415 individuals attending the Manoa Urban Outpatient Clinic (Caroní Municipality, Bolívar State, Venezuela) in the Adult Hygiene Program and who requested health certification to work as food handlers were studied. Stool samples obtained by spontaneous evacuation were examined by direct microscopy and the Willis concentration method.