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  • Title: Inactivation of coxsackieviruses B3 and B5 in water by chlorine.
    Author: Jensen H, Thomas K, Sharp DG.
    Journal: Appl Environ Microbiol; 1980 Sep; 40(3):633-40. PubMed ID: 6252839.
    Abstract:
    The inactivation rates of coxsackievirus B3 (CB3) and B5 (CB5) by chlorine in dilute buffer at pH 6 were very nearly the same and about half that of poliovirus (Mahoney) under similar conditions. Purified CB3, like the poliovirus, aggregated in the acid range but not at pH 7 and above. Purified CB5 aggregated rapidly at all pH values; still, the graph of log surviving infectivity versus time was a straight line. No chlorine inactivation data were obtained with dispersed CB5, for it could be dispersed only by addition of diethylaminoethyl dextran, which would react with the chlorine. Addition of 0.1 M NaCl to the buffer at pH 6 did not influence the aggregation of CB5 or the rate of chlorine action on either of the coxsackie-viruses, but at pH 10 it increased the disinfection activity of OCl- for both viruses roughly 20-fold. Cesium chloride had a similar but smaller effect. KCl was the most active of the three in this respect, making the inactivating effect of OCl- at pH 10 about equal to that of HOCl at pH 6.
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