A first dose of the Pfizer Covid-19 vaccine is 85 per cent effective, a new study of Israeli health workers has revealed.
The research, published by The Lancet, appears to support the UK government’s decision to go ahead with a mass single dose vaccine programme.
The research was conducted on more than 7,000 healthcare workers last month who were vaccinated at Israel’s Sheba Medical Centre.
It showed an 85 per cent reduction in symptomatic disease between 15 and 28 days after the jab was given.