Protection against infection after omicron: early infection does not make immune

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According to a study, infection with the first omicron variant BA.1 may not protect against reinfection with later variants of this strand.

As Chinese scientists have reported in the journal Nature, booster vaccines based on BA.1 – such as those being developed by Pfizer/BioNTech – “may therefore not provide broad protection against new omicron variants,” they say, citing laboratory experiments.

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Researchers not involved in the study commented that vaccinations are likely to continue to protect against severe courses and should be given. “When it’s your turn to get a booster, get it,” said Onyema Ogbuagu of the U.S.-based Yale University.