So das Résumée einer dänischen Studie, die auf dem dänischen Impf- und PCR-Register beruht, also methodisch sehr belastbar ist.

Observed Protection Against SARS-CoV-2 Reinfection Following a Primary Infection: A Danish Cohort Study Using Two Years of Nationwide PCR-Test Data by Daniela Michlmayr, Christian Holm Hansen, Sophie Madeleine Gubbels, Palle Valentiner-Branth, Peter Michael Bager, Niels Obel, Birgitte Drewes, Camilla Holten Møller, Frederik Trier Møller, Rebecca Legarth, Kåre Mølbak, Steen Ethelberg :: SSRN
Background: The level of protection after a SARS-CoV-2 infection against reinfection and COVID-19 disease remains important with much of the world still unvacci