One week after second vaccinations were administered, an outbreak of B.1.1.7 lineage severe acute respiratory syndrome coronavirus 2 infections occurred in a long-term care facility in Berlin, Germany, affecting 16/20 vaccinated and 4/4 unvaccinated residents. Despite considerable viral loads, vaccinated residents experienced mild symptoms and faster time to negative test results.
Keywords: B cell; Berlin; COVID-19; Germany; SARS-CoV-2; T cell; antibody; coronavirus disease; immunity; mRNA; outbreak; phylogeny; respiratory infections; severe acute respiratory syndrome coronavirus 2; vaccine; viruses; zoonoses.