A third wave of COVID-19 occurred after Christmas 2020 in Madrid, one of the European pandemic epicenters.We noticed 6 major differential features to previous waves.First, household contacts were a large proportion of cases.Second, access to rapid antigen tests Washing Up Bowl allowed prompt diagnosis and isolation.
Third, clinically severe cases and mortality rates were lower.Fourth, the more transmissible B.1.1.
7 strain was increasingly Collections found.Fifth, vaccination benefits were seen in healthcare workers and nursing homes.Lastly, reinfections were more common.By Easter 2021, approximately 25% of the population in Madrid had been infected with SARS-CoV-2.
Therefore, massive and accelerated vaccination campaigns are warranted to prevent new COVID-19 waves.