BA.2.75.2: new Omicron subvariant can evade nearly all protective antibodies: study – CTV

Oct. 17, 2022

A new study from researchers in Sweden suggests the world could be in for a dramatic surge in COVID-19 cases this winter due to new mutations creating variants that could avoid immunity from vaccines or previous infections.

The variant BA.2.75.2, one of the latest developments in the Omicron lineage of COVID-19, can evade the majority of neutralizing antibodies in the blood, the study found, and is also resistant to several monoclonal antibody antiviral treatments that were created to treat those ill with COVID-19.

The mutations that make this possible in BA.2.75.2 are popping up in other variants as the virus continues to expand and evolve, researchers say — and it’s still unknown whether bivalent vaccines will provide more robust immunity against this particular variant.

The study, published in the Lancet Infectious Diseases on Thursday, looked at three subvariants of Omicron, and found that although vaccines do still provide some protection against them, certain variants are better than others at escaping antibodies.

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