Israeli study: Pfizer vaccine less effective for coronavirus delta strain

July 7, 2021 By John Off
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This is also the case with the prevention of symptomatic diseases, but the vaccine is still very effective and protects against a serious course of the disease and hospitalization, and that percentage according to research is 93 percent.

The Israeli health ministry said the Pfizer vaccine was less effective against the coronavirus delta strain and prevented only 64 percent of the infection, while protection against the severe form of Covid-19 remained high.

According to the ministry, the effectiveness of the Pfizer vaccine has dropped significantly in recent weeks after the aggressive delta strain expanded, and since June 6, the vaccine’s effectiveness in preventing infection has dropped to 64 percent from 95.3 percent was when the alpha strain of the coronavirus was dominant, CNN reports.

This is also the case with the prevention of symptomatic diseases, but the vaccine continues to effectively protect against more severe forms of the disease and hospitalization.

In February, the Israeli Ministry of Health announced that the Pfizer vaccine prevented Covid-19 disease, 95.8 percent, symptomatic disease in 98 percent of cases, while the effectiveness in terms of preventing hospitalization and death was 99 percent.

Due to the high rate of vaccination in Israel, there are good data, and although for about two weeks due to the delta soybean recorded an increasing number of registered new infections, for the same period no deaths related to coronavirus were reported.

Preliminary findings from another Scottish study, published in the journal Lanset last month, show that the Pfizer vaccine provides 79 percent protection against the coronavirus delta strain, compared with 92 percent of the infection caused by the alpha strain.

The same study analyzed data from 5.4 million people in Scotland and found that the AstraZeneka vaccine provided 60 percent protection against coronavirus delta strain infection compared with 73 percent protection against alpha strain.

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