Hybrid immunity from vaccination and Omicron BA.1 or BA.5 breakthrough infections exhibits cross-reactive efficacy against BA.2.75

Researchers recently measured the neutralizing antibody titers against the wild-type strain of SARS-CoV-2 and the SARS-CoV-2 Omicron subvariants in healthcare workers fully vaccinated with three doses of the Comirnaty vaccine who experienced breakthrough Omicron infections.