PEOPLE who were struck with Omicron at Christmas have been warned they are still at risk of the bug. Despite Christmas only feeling like yesterday, enough time has passed for immunity against the b…
Imperial College London Professor Paul Elliot, lead on the Covid surveillance study REACT-1, said greater mixing and waning immunity was to blame for the uptick.
With high circulation of the virus, it's likely someone will be exposed to it at some point after recovery. It is not clear if these people had been reinfected, or if they carried both strains at the same time. “However, initial data from population-level reinfection studies suggest that infection with BA.1 provides strong protection against reinfection with BA.2, at least for the limited period for which data are available.”Having Omicron BA.1 is thought to provide some cross protection against the BA.2 strain, given they are of the same lineage.
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