World
Study: Pfizer first dose 85% effective after 2-4 weeks
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.
The 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.
Israeli 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.
