Study in Israel: Pfizer Vaccine only 39% Effective at Preventing Infection with Delta Variant
Over the past month, Israel, the world’s most heavily vaccinated country (with leading mRNA jabs, no less) has seen the number of positive COVID tests has risen by more than 30x as the number of active infections in the country has surpassed 10,000.
Meanwhile, the Israeli Health Ministry, which has previously estimated the true efficacy of the Pfizer jab against the Delta variant at only 64% (while still more than 90% effective at preventing serious illness and death), just released new data purporting to show that while the Pfizer jab is still 88% effective at preventing serious illness, it’s only 39% effective at preventing infection with Delta.
Some media acknowledged that the Israeli data “could be skewed" because of different ways of testing vaccinated groups of people versus those who hadn’t been innoculated, according to the report.
Experts say that the data are likely to fuel debate over whether booster shots should be given to people who’ve already been vaccinated – something Pfizer has said it plans to request.
Dr. Anthony Fauci, the FDA and the CDC have all said that there’s no evidence yet that a third “booster” shot would be necessary. Israel has already ordered a round of booster shots that it plans to start distributing to the most vulnerable patients Aug. 1.
The Israeli numbers are much lower than other recent similar studies.
Another study recently published in the New England Journal of Medicine, which found that two doses offers 88% protection against the Delta variant causing symptomatic disease, while offering 94% protection against the alpha variant.
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