Observed protection against SARS-CoV-2 reinfection following a primary infection: A Danish cohort study among unvaccinated using two years of nationwide PCR-test data

by Bager, P., Drewes, B., Ethelberg, S., Gubbels, S.M, Hansen, C.H, Legarth, R., Michlmayr, D., Mølbak, K., Møller, C.H, Møller, F.T, Obel, N., Valentiner-Branth, P.
Published 2022