Accession Number:

ADA199503

Title:

Inactivation of Hepatitis A Virus (HAV) by Chlorine and Iodine in Water

Descriptive Note:

Annual rept. 15 Oct 1985-14 Oct 1986

Corporate Author:

NORTH CAROLINA UNIV AT CHAPEL HILL

Personal Author(s):

Report Date:

1986-11-01

Pagination or Media Count:

43.0

Abstract:

Batch laboratory studies were done on the inactivation of HAV, poliovirus 1 and echovirus 1 by 1 mg1 free chlorine and ca. 8 mg1 Army iodine in halogen demand-free water at pH 4.5, 7.0 and 9.5 and 5 and 25 C. HAV was rapidly inactivated by both halogens under the conditions tested so far, with times for 99.99 inactivation of less than 15 minutes. In contrast, polio 1 and echo 1 were not rapidly inactivated under some conditions, notably pH 9.5 for chlorine and pH 4.5 and 7.0 for iodine. Further studies are in progress to determine the sensitivity of these viruses to chlorine and iodine in the presence of appreciable halogen demand and other potential interferences.

Subject Categories:

  • Microbiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE