Pfizer, BioNTech to develop booster vaccine for delta variant of COVID-19
Pfizer Inc. and COVID-19 vaccine partner BioNTech said late Thursday they are developing a booster shot specifically targeting the so-called delta variant of the virus that causes the disease.
Pfizer PFE, -0.25% and BioNTech BNTX, +0.97% said in a statement that there is encouraging data from the use of a third booster shot of their current BNT162b2 vaccine, which is widely administered in two doses given three weeks apart. The companies also pointed to evidence from the Israeli Ministry of Health showing the effectiveness of the vaccine declined six months after the shots, just as the delta variant is taking hold in the country.“That is why we have said, and we continue to believe, that it is likely, based on the totality of the data we have to date, that a third dose may be needed within 6 to 12 months after full vaccination,” the companies said.
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