In the absence of Mr. Mark Hollis, is there any other sanitary engineer present who would care to discuss the subject of water treatment measures in control of amebiasis that was presented by Mr. Newton?
There is one thing that should be pointed out. Mr. Newton may wish to comment further on this later on at this meeting. Even though as he indicated, most modern purification systems may be adequate to produce water free of histolytica cysts, we must recognize that poor plumbing may contaminate the water supply again. The experiences in Chicago have been adequate to impress the possibility that back-siphoning and cross-connections can result in the contamination of supposedly pure water (McCoy, et al., 1936).
Communicable Disease Center, U. S. Public Health Service, Atlanta, Ga.