Estrategia de Ascaris lumbricoides y Trichuris trichiura para la contaminación del medio ambiente, en una zona endemica

摘要

The distribution of frequences of the number per grame of Ascaris lumbricoides and Trichuris trichiura in the faeces of naturally infected human in endemic areas, were found following a negative binomial distribution and an overdispersal pattern, independently of the ages of hosts. These results show, that only few hosts, independently of their ages, are involved in the higher environment contamination.