[INTESTINAL HELMINTHIASIS AND GROWTH IN THE SCHOOL AGE].
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As result of sanitary-helminthological studies it has been found out, that under the conditions of urban agglomeration a great number of dogs, their uncontrolled maintenance and access to various objects induce intensive environmental pollution with zoohelminthologic causative agents and provides a high risk of infection of the population with causative agents of such diseases as toxocariasis++ and echinococcosis. Adherence to sanitary-veterinary rules of dogs maintenance prevents to a significant degree dispersion of the invasion matter in the environment.
Decades of surveying helminthic diseases in domestic and free-living ruminants in the CSR evidenced extensive infestation by lungworms, gastrointestinal nematodes, and liver flukes. In some years, parasitic invasion caused up to 50% of total losses of roe deer. Programmes to control systematically dictyocaulosis and fascioliasis were carried out with cattle and sheep in 1970-1980, with deer in 1981-1985. In the eighties, the incidence of F. hepatica in cattle and sheep dropped to less than 1%, of D. viviparus in cattle to 0.2%; no D. filaria is to be encountered in sheep presently. The share of parasitic diseases in total losses of roe deer decreased to 19% in 1983-1985.
Parasitologic evaluations of 112 fecal specimens from 292 mammals from the Santiago National Zoo (36 specimens were pooled specimens from greater than or equal to 2 animals) indicated that 51 mammals had protozoa or helminths in their feces. Most of the parasites in the herbivorous species were trichurids and strongylids, whereas most of the parasites in the carnivorous species were ascarids. Coccidia spp and Giardia spp were the most frequently detected protozoans in the mammals evaluated. Of 127 captive mammals serologically evaluated for antibodies against Toxoplasma gondii (indirect hemagglutination test), 35 (27.5%) were positive for T gondii: 7 (46.6%) of 15 carnivores, 24 (25.2%) of 95 artyodactyls, and 4 (22.5%) of 17 nonhuman primates. Antibodies against T gondii also were found in 8 of 10 domestic cats captured within the zoo and in 6 of 13 volunteer zookeepers.