Study in Israel shows Pfizer vaccine 85% effective after first dose

TEL AVIV (REUTERS) – The first dose of Pfizer Inc and BioNTech’s COVID-19 vaccine is 85 per cent effective, a study of Israeli healthcare workers published in The Lancet medical journal has found.

The research was conducted on more than 7,000 healthcare workers who were vaccinated at the Sheba Medical Centre in Israel. Researchers saw an 85 per cent reduction of symptomatic Covid-19 between 15 and 28 days after they were given the vaccine.

Overall infections, including among asymptomatic patients, were reduced by 75 per cent.

Pfizer in an emailed statement said it was looking at real world data from Israel and other locations to understand the impact of its vaccine against Covid-19 arising from emerging variants.

The Lancet publication comes a day after Canadian researchers suggested that the second Pfizer dose be delayed given the high level of protection from the first shot in order to increase the number of people getting vaccinated.

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