Preprint: We need to understand #COVID19 cumulative incidence & extent of community spread. Serological tests are now available to help address this need, but how do we best design / interpret COVID-19 seroprevalence surveys, given the challenges? 1/n https://t.co/onSvecQkHX pic.twitter.com/mbRizNukNP

— Yonatan Grad (@yhgrad) April 16, 2020