Two doses of the Pfizer COVID-19 vaccine are 88 percent effective against the delta variant, according to a new study.
The study, published in the New England Journal of Medicine on Wednesday from researchers at Public Health England, offers reassurance about the effectiveness of the vaccines against the delta variant.
The 88 percent effectiveness against the delta variant was only modestly lower than the 93.7 percent effectiveness against the alpha variant, which was first identified in the United Kingdom.
The findings reinforce earlier data from Public Health England in May finding 88 percent effectiveness against the delta variant.
They are in contrast to an Israeli study earlier this month that provoked some concern when it found the Pfizer vaccine was just 64 percent effective against the delta variant, but that study’s methods drew skepticism from some experts.
