Covid-19: why former patients must wait three months before their injection


DECRYPTION – Open to all French adults, vaccination is not available for people who contracted Covid-19 less than three months ago. Explanations.

Since this Wednesday, May 12, vaccination is de facto open to all adults, under certain conditions when booking an appointment. Only patients who contracted the disease less than three months ago are still called upon to wait. But why? “Former patients, even elderly, are not given priority, because scientific data show that natural immunity to the virus is quite durable and protects against severe forms,” recalls Mylène Ogliastro, virologist and research director at INRAE ​​in Montpellier. Now that we have more doses, the objective is to strengthen this protection which results from a first natural vaccination by a “booster” with a dose of a vaccine. ”

However, experts believe that the amount of antibodies may not be enough to prevent re-infection after a few months. The protection does not disappear completely, because the immune system has developed a cellular response which aims to

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