648844 external_news 1626453433 1626453433 To help answer Scientific American's question, the authors seek the expertise of Joshua Weitz, Patton Distinguished Professor and Co-Director of the Interdisciplinary Ph.D. in Quantitative Biosciences in the School of Biological Sciences. Two tools built by Weitz's team are included: the Covid-19 Event Risk Assessment Planning Tool that estimates the probabilty of infection in groups of all sizes, given the rates of infection in an area; and a guide for estimating what proportion of each state's population has Covid-19 immunity, either through vaccination or natural infection. 

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