According to the recently released SAGE papers👇, keeping universities open plays a greater role in spreading Covid-19 infection -- ~0.3 (0.2-0.5) increase in R -- than any other activity, apart from keeping secondary schools open -- ~0.35 (0.2-0.5). 1/https://t.co/wzhWma8Uqy

— Michael Otsuka (@MikeOtsuka) October 14, 2020