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Update
On the 20 Hours set, Thursday, November 18, Dr Damien Mascret takes stock of the duration of protection of the vaccine against Covid-19 and the importance of the third dose.
The effects of the Covid-19 vaccine may last a little shorter than scientists imagined. Its effectiveness decreases over time. “We hoped to have at least six months of protection against infections. Unfortunately the Delta variant has arrived and that explains why the decline is a little faster than expected”, develops Dr Damien Mascret, doctor and journalist for France Télévisions.
“In California, it has been calculated that protection, which is 88% the first month after the first dose, drops to 47% by the sixth month. In those over 65, it is still a little earlier. the 4th month, the protection drops to 56% “, he resumed. In France, the booster, also called the third dose, is done six months after the second. Its rate of effectiveness remains high and important to avoid severe forms of Covid-19.
Among our sources:
The Lancet
Non-exhaustive list