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INFLUENCE OF TEMPERATURE AND INTRINSIC CHARACTERISTICS OF SURFACE FRESHWATERS ON VIRUS STABILITY
Citation:
Hurst, C., W. Benton, AND K. McClellan. INFLUENCE OF TEMPERATURE AND INTRINSIC CHARACTERISTICS OF SURFACE FRESHWATERS ON VIRUS STABILITY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-89/086 (NTIS PB89222822).
Description:
Multiple linear regression analysis was used to statistically model the influence of natural chemical, bacteriological, and physical environmental water parameters upon the survival of human enteroviruses in surface freshwaters. odel development was based upon experimental data yielded from a factorially designed study. he experimental design factors utilized were: intrinsic differences related to water source, with five surface water collection sites employed; virus type, comparing persistence of three different laboratory strains plus the indigenous viral population; and incubation temperature, individually examining virus survival at -20, 1, and 22 degrees celsius. he values for the water parameters were used as independent variables and regressed versus rate values representing viral inactivation under each possible combination of the three experimental design factors. he rate values were, themselves, expressed in terms of log base 10 units of viral titer reduction per day of incubation. he results of the modeling indicated that the most important predictors of viral persistence in the examined surface freshwaters were temperature, turbidity, and the number of generations of bacterial growth which water from a particular collection site could support.