The Omicron variants BA.1 and BA.2 of the SARS-CoV-2 virus, which dominated from about December to April, can already circumvent after three months the protection against infection offered by vaccinations and recovery from infection. This has been revealed in a study in Frankfurt lead-managed by University Hospital Frankfurt and Goethe University. Moreover, according to the study, various pharmaceutical antibody preparations (monoclonal antibodies) have widely differing effects on the two virus variants. The study authors emphasise how important it is to align protective measures to the genetic changes in the virus, therefore.