Coronavirus: Omicron can reduce Delta infections, study shows; WHO warns of Omicron overload

Infection with the Omicron coronavirus variant can also strengthen immunity against the earlier Delta strain, reducing the risk of severe disease, according to a paper released by South African scientists. While Omicron has been shown to be highly transmissible and can evade some antibodies, after two weeks of getting symptoms, immunity to subsequent infections from the strain rose 14-fold, according to the authors led by Alex Sigal and Khadija Khan of the Durban, South Africa-based Africa Health Research Institute.…

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