Efficacy of Standard Purification Methods in Removing Poliomyelitis Virus from Water

Use of Ultraviolet Radiation in Microbiological Laboratories

“…Carlson at al (42) found that treatment of water with artificial UV radiation was moz'; 'Ffective in inactivating poliomyelitis virus than was expoiur ¶ to direct sunlight or treatment with common water purification methods such as coagulation and sedimentation, sand filtration, absorption on inactivated charcoal, aeration, adjustment of pH and storage.…”

Relation of Coliform‐Organism Test to Enteric‐Virus Pollution

“…to remove colloidal matter and bacteria -did not completely free water from the viruses of poliomyelitis (7,8) and hepatitis (9). Flocculation, carried out as described in the following paragraph, removed bacteriophage and Theiler and Coxsackie viruses from water to a small degree (as well as coliform bacteria), though by no means exhaustively (see Fig.…”

Supposed Involvement of Water Supplies in Poliomyelitis Transmission

“…In general, all of the facts and observations on the manner of occurrence and the distribution of cases in time, place and persons must be consistent with the hypothesis of dissemination by the suspected water distribution system and no other explanation must be equally valid. It consists very largely of observations on the occurrence of groups of cases along watercourses (lakes, rivers and brooks) into which sewage is discharged, and of Kling's belief-based upon the 1942 laboratory experiments of Carlson, Ridenour and McKhann (21) to which reference has been made above-that the treatment of these surface waters by filtration through sand (no details given), which was satisfactory by bacteriological tests, was insufficient to remove viruses. In the six years which have elapsed since that publication there have been numerous reports of investigations of the occurrence of poliomyelitis in various areas of this country and in other parts of the world.…”