Antibodies’ neutralization efficacy against Omicron variants BA.1 And BA.2 wanes rapidly, study finds

The Omicron variant of the SARS-CoV-2 virus was first detected in South Africa in November 2021. The high level of infectiousness of the virus and its ability to quickly spawn additional variants has also been observed in Germany: Since January 2022 the Omicron variant BA.1 has dominated here, followed in subsequent months by the variant BA.2.