Pfizer vaccine efficacy ‘decreases against Delta variant’

Data from Israel suggests jab is less effective at preventing infection with rapidly spreading strain of Covid

Israeli medical worker
Medical worker prepares a dose of the Pfizer-BioNTech vaccine in Tel Aviv
(Image credit: Jack Guez/AFP/Getty Images)

The effectiveness of the Pfizer-BioNTech vaccine in preventing Covid infection and symptomatic illness has dropped in Israel as the Delta variant spreads, according to a preliminary study.

The decline, reported by the country’s health ministry, has also coincided with the lifting of almost all coronavirus restrictions on 1 June, Israeli news site Ynet reports.

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