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Mean Rt values (± standard error [SE]) for eight swine (red) and six human (gray) viruses in distilled water at temperatures ranging from 4°C to 37°C. The pH was held constant at 7.2, and salinity was 0 ppm. Significant differences in the responses for swine and human viruses exist at temperatures of 10°C (*, P < 0.05) and 23°C (**, P < 0.01). No other statistically significant differences were observed at an α value of 0.05.
