| analysis of the prevalence of infection and associations between human gastrointestinal nematodes among different age classes living in the urban and suburban communities of port harcourt, nigeria. | fresh stool samples from 300 subjects presenting at out-patient clinics in two major hospitals in port harcourt were analysed for the prevalence and intensity of gastrointestinal (gi) nematode infections and 85.3% were found to carry at least one of the four species of gi nematodes recognized during the study. the most common species was ascaris lumbricoides (54%), followed by trichuris trichiura (43.7%) and necator americanus (42.7%) and lastly strongyloides stercoralis (33%). peak prevalence f ... | 1996 | 8960202 |