Pfizer-BioNTech vaccine effectiveness wanes to 47% against COVID-19 infection after six months

Two doses of the Pfizer-BioNTech vaccine are 90% effective against COVID-19 hospitalisation for at least six months but only 47% effective against infection after that period, according to a new study.

The peer-reviewed analysis of the coronavirus jab, published in The Lancet, also found that reductions in the vaccine’s effectiveness against COVID-19 infection was due
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