News out of Israel that the first dose of the Pfizer-BioNTech vaccine may not be as effective as initially hoped has caused ripples of concern among Montreal's medical community.
On Monday, Israel’s so-called coronavirus czar, Nachman Ash, reportedly said the first dose of the vaccine appeared “less effective than we had thought.” In remarks reported by Army Radio, Ash added that the protective effect of the vaccine against SARS-CoV-2, the virus that causes COVID-19, was “lower than Pfizer presented.”
“the U.K.’s Joint Committee on Vaccination and Immunization concluded that the efficacy of the vaccine was 89 per cent, starting 14 days after the first dose.”
But a “real world” analysis of the vaccine by Clalit, Israel’s largest health provider, has found that the chance of a person being infected with the coronavirus dropped by 33 per cent 14 days after they were given the first shot. The Times of Israel reported that another health provider, Maccabi, observed the vaccine caused a 60 per cent drop in the chances of infection after the first dose.