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AstraZeneca vaccine effective against Pfizer and Delta

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July 22, 2021-Pfizer and AstraZeneca vaccination –Primary vaccination Less effective against UK options — Delta variant of Coronavirus Compared to the alpha variant (known as B.1.1.7), according to a study published online Wednesday in the New England Journal of Medicine.

A researcher led by Dr. Jamie Lopez Bernal of the British Public Health Service wrote that the reduced efficacy against the delta mutant was particularly pronounced after a single dose, but was less effective after a single dose. Nevertheless, the Pfizer vaccine was at least 88% effective against Delta after two doses.AstraZeneca vaccination There was a 67% effect.

This difference was especially noticeable with a single dose of either vaccine. A single dose of Pfizer was 48.7% effective against alpha variants, compared to 30.7% against delta variants. The results after a single dose of the AstraZeneca vaccine were similar.

The delta variant first appeared in India, but has spread rapidly worldwide and is now spurring an increase in COVID cases in countries, including the United Kingdom.In the United States, at least delta variants 83% of cases..

“fact [that] It still has a remarkable effect and is encouraging. However, complacency is not guaranteed because the virus continues to cause at least mild illness in some people. [of] Stephen JW Evans, an epidemiologist at the London School of Economics and Tropical Medicine (UK), says.

Medscape Medical News

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