An epidemiological survey was preformed in 81 children forn a rural town, Escobar, in order to determine the prevalence of the intestinal parasitosis by four different methods. Out of the 81 samples studied, 63 yielded positive parasitosis (77.8 percent). The most frecuent parasites fuond were Blastocistis hominis (60.3 percent), uncynaria (46 percent) and Giardia lamblia (34.9 percent). In 40 samples, more than one parasite were detected. In 22,13 and 5 cases were found 2,3 and more parasites, respectively