Current COVID-19 vaccines may protect from severe disease caused by Omicron: Study

Without enough neutralising antibodies, Omicron is more likely to cause a breakthrough infection, the researchers said.

Current COVID-19 vaccines prompt the body to make effective, long-lasting T cells against SARS-CoV-2 that can recognise variants of concern, including Omicron, and protect from severe disease, a study has found.

The research, published in the journalCell, also shows that fully vaccinated people have fewer memory B cells and neutralising antibodies against the Omicron variant.

Both T and B cells play an important role in the immune response against an infection.