Geohelmintosis intestinales en el hombre y animales domésticos de sectores ribereños de la cuenca del río Valdivia Chile / Intestinal geohelminthosis in man and domestic animals in riverside sectors of Valdivia river basin, Chile

ABSTRACT

In march - october 1987 were analyzed 1295 coprological specimens in a sample of the human population who lives in riverside localities in the Valdivia river basin, Chile. A 23,6 for percent of examined persons presented infection by one or more helminth species. The prevalence of infection by ascaris lumbricoides, trichuris trichiura and trichostrongylidae gen. sp were 15,5; 12,7 and 0,2 for percent, respectively. The prevalence of human ascariosis and trichuriosis were greater in pre-school and school children. The sex of the host and prevalence of geohelminthosis did not show any relationship. Prevalences of ascariosis and trichuriosis were higher in persons from houses no sanitary fecal and water disposal. Over 35 for percent and 20,7 for percent of family groups showed infection by A. lumbricoides and T. trichiura, respectively in over 40 for percent of the members of each group. Fecal samples from domestic mammals revealed the following prevalences rates helminth infections in dogs 19,0 and 15,2 for percent for toxocara canis and uncinaria stenocephala respectively, in cats 65,1 for percent for toxocara cati, and in pigs 25,4 and 3,2 for percent for ascaris suum and trichuris suis respectively. Some of these species are clearly demostrated agents of zoonoses