| intestinal protozoan and helminth infections in the municipality san juan y martínez, pinar del río, cuba. | a cross-sectional study was carried out to determine the prevalence of intestinal parasitic infections and the intensity of soil-transmitted helminths (sths) among children who attend the educational centres of san juan y martinez, cuba. ascaris lumbricoides, blastocystis hominis and giardia lamblia were the most common parasites found, with prevalence rates of 40.5%, 38.5% and 25%, respectively. in total, 91% of children harboured at least one type of intestinal parasite. the rates and intensit ... | 2007 | 17988492 |