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According to a recent study, the two doses of vaccine against Covid-19 do not protect as well several months after the injections. More and more people could be affected by a third booster dose.
To protect against the Covid-19, the two doses of vaccine may no longer be considered sufficient. According to a study recently published by Israeli researchers, the immunity conferred by vaccination declines over time. For vaccines aged 60 and over, the efficacy against virus contamination is 73% four months after the second injection. She falls to 57% after six months. A drastic drop in immunity found in all age groups. With regard to severe forms, the effectiveness of a double dose remains high, but decreases: for 40-59 year olds, it is 94% after six months. She goes down to 86% in the over 60s.
Immunologist at the Saint-Etienne University Hospital (Loire) and committee member vaccine scientist Covid-19, Professor Stéphane Paul declares that he “We will have to decrease a little the age from which we are going to offer this third dose, probably around the age of 50 since it is around this age that we see the strongest decreases in antibodies after six month”. Saturday November 6, over 23% of the French have still not received any dose of the vaccine against Covid-19.
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