Alternative Filtration Methods for Removal of 'Giardia' Cysts and Cyst Models

摘要

Recent occurrence of numerous outbreaks of waterborne giardiasis has renewed interest in water filtration for cyst removal. This paper presents an in-depth review of granular media and diatomaceous earth (D.E.) filtration research conducted in the 1930's and 1940's when Entamoeba histolytica cyst problems were a great concern. Recent studies with cyst models and Giardia muris cysts suggest that properly operated water filtration plants should be able to remove a high percentage of G. lamblia cysts.