654026 external_news 1641322693 1641322693 Nobody wants to mandate business closures, but so many people are getting sick during the recent Omicron wave of Covid-19 that businesses are closing anyway. For most vaccinated people, Omicron will be mild. Yet even a mild cold, sufficiently widespread, can disrupt a city. But if soft lockdowns help suppress that viral spread, then cases will drop off sooner, while many people are still susceptible. In other words, “when you see a peak and see it go down, it doesn’t mean the risk has abated,” says Joshua Weitz, Professor and Tom and Marie Patton Chair in the School of Biological Sciences, Co-Director of the Interdisciplinary Ph.D. in Quantitative Biosciences, and Blaise Pascal International Chair of Excellence at the Ecole Normale Superieure.

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