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apple developer account:Pfizer first dose 85 per cent effective after 2-4 weeks: Study

admin2021-02-2116

JERUSALEM — The first dose of the Pfizer vaccination is 85 per cent effective against coronavirus infection between two and four weeks after inoculation, according to a study published in the Lancet medical journal.rrThe survey was carried out on healthcare workers at the largest hospital in Israel, which on December 19 launched a mass vaccination campaign regarded as the world's fastest.rrIsraeli studies have found the Pfizer vaccine to be 95 per cent effective one week after a second jab, while the Lancet report focused on more than 9,000 medical staff at Sheba hospital near Tel Aviv.rrSome 7,000 of them received the first dose and the rest were not inoculated.rrFrom the group, 170 were diagnosed with Covid-19 after tests carried out only on those showing symptoms or who had been in contact with coronavirus carriers.rrFifty-two per cent of them were found to have not been vaccinated.rrComparing the two groups, the Sheba study calculated that the vaccine was 47 per cent effective between one and 14 days after inoculation, rising to 85 per cent after 15 to 28 days.rr"What we see is a really high effectiveness already right after two weeks, between two weeks to four weeks after vaccine, already high effectiveness of 85 per cent reduction of symptomatic infection," Professor Gili Regev-Yochay, co-author of the study, told a small group of journalists.rrShe said that despite the vaccine being "amazingly effective", scientists are still studying whether fully vaccinated people can transmit the virus to others.rr"That is the big, big, question. We are working on it. This is not on this paper and I hope we will have some good news soon," said Professor Regev-Yochay.rrIsrael has delivered a shot of the Pfizer/BioNTech vaccine to 4.23 million residents, or 47 per cent of its nine million population, 2.85 million of whom have received the recommended full course of two jabs, latest health ministry figures show. AFPr
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