"We may need a fourth dose at some point." This is what the president of the scientific council Jean-François Delfraissy declared, during a hearing in the Senate this Wednesday morning, during which the professor of medicine answered questions from senators about vaccination and in particular about the third dose of vaccine, also called a booster dose. The professor recalled that after this booster dose, the immune response was increased. It remains to be seen for how long. “I don't know if we'll need a fourth dose. I do not know where the immunity is at the end of three months ”, declared the president of the scientific council."It is possible that the 'boost' of the third dose is sustainable over time, but it is also possible that we need a fourth dose," said Delfraissy, as the appointments for the third dose of vaccine are stormed.
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Will vaccination be enough to limit the fifth wave?
"No", replied Professor Delfraissy, who pleads for the use of "the whole of the toolbox", in the first ranks of which the barrier gestures and the limitation of social contacts in order to limit the spread of the virus, to a few days before the start of the year-end vacation.
"The parties can take place but the fact of limiting the number of guests, to be tested before, to check that the oldest are vaccinated ... It is common sense", he said.
