Augie RayYesterday, I posted a study that found university students had around a 1% risk of #COVID19 infection per 45-minute class. Here's a new STUDY that found something similar:
▫️ The probability of transmission increased linearly with duration of exposure (1.1% per hour)
▫️ Most exposures were short (median 0.7 h), but transmissions typically resulted from exposures lasting between 1 h and several days.
▫️ Households accounted for about 6% of contacts but 40% of transmissions.
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