COVID-19: How vaccination and previous infections also help fight against omicron

The omicron variant of SARS-CoV-2 has caused another major wave of infection worldwide. This is because even vaccinated individuals or those who had contracted a previous variant of the virus can become infected with omicron. Nevertheless, severe courses are relatively rare. Scientists at the Medical Center–University of Freiburg have now broken down in detail how the cross-variant protection against infection or severe disease progression arises. The researchers published their results on April 28, 2022 in the online edition of the journal Nature Microbiology.

source https://medicalxpress.com/news/2022-05-covid-vaccination-previous-infections-omicron.html