New efficacy rate statement on Pfizer-BioNTech vaccine from Israel

Israel, where the Delta variant of the coronavirus has spread, announced that the effectiveness of the Pfizer-BioNTech Covid-19 vaccine in preventing new infections and symptomatic cases has decreased, but it is still quite effective in preventing severe cases.

The decline in efficacy of the vaccine coincided with the spread of the Delta variant and the lifting of social distancing measures in Israel.

According to the statement made last night by Israel’s Ministry of Health, which has vaccinated about 60 percent of its population, the effectiveness of the vaccine in preventing the spread of the disease and symptomatic cases decreased to 64 percent as of 6 June. It was announced that the vaccine was 93 percent effective in preventing hospitalizations and severe cases.


The ministry did not specify how effective the vaccine was previously in preventing the spread of the disease and symptomatic cases, and did not give details. Two doses of the Pfizer-BioNTech vaccine were more than 95 percent effective in preventing the spread of the disease, symptomatic and severe cases, ministry officials said in a report released in May.

A Pfizer spokesperson did not respond to questions about the data released by Israel. But he cited research showing that antibodies produced by the vaccine can inactivate coronavirus variants, including Delta.


About 60 percent of Israel’s 9.3 million population received at least one dose of Pfizer-BioNTech vaccine, while the number of cases, which was 10,000 daily in January, dropped to single digits last month, with the majority vaccinated.

With the number of cases falling to single digits, the Delta variant of the virus began to spread in Israel, where almost all social distance and mask-wearing rules were lifted, and a few days ago, the mask rules were partially reinstated. The daily number of cases rose to 343 on Sunday.

Source: Cumhuriyet Gazetesi – Güncel by

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