Badanie wpływu różnych stopni oczyszczania ścieków na obecność jaj robaków jelitowych

The examinations carried out in a big settlement showed in 1 ml of row sewage the presence of 30 Ascaris and 25 Trichuris eggs. Afier being passed through all degrees of purification the sewage still contained 5% of eggs. The soil from the site of sewage outflow exhibited on average 33 Ascaris and 25 Trichuris eggs. In 200 g of partially fermented and dried soil there were 771 Ascaris, 237 Trichuris and 13 Taenia eggs. The report is part of studies on the survival rate of intestinal parasites under various environmental conditions.