Pfizer, AstraZeneca effective against variants, study finds

By VOA News

Two doses of the COVID-19 vaccines made by Pfizer-BioNTech or AstraZeneca are about as effective against the coronavirus variant first found in India as they are against the variant first found in England, according to a study by Public Health England announced Saturday (May 22).

The study found that Pfizer’s vaccine is 88% effective against B.1.617.2, or the Indian variant, and 93% effective against B.1.1.7, now known as the Kent variant. AstraZeneca’s vaccine is 60% effective against the Indian variant and 66% effective against the English variant.

In both cases, the effectiveness was measured two weeks after the second shot and against symptomatic disease. The Kent variant is the dominant strain in England, but health officials fear the Indian strain may outpace it.

In England, health authorities have stretched the time between the two doses to as much as three months in order to get more shots in more arms and stop the coronavirus in its tracks. But against the variants, two shots are better than one, so for clinically vulnerable people or those older than 50, the period between the two shots will be cut to eight weeks.

“I’m increasingly confident that we’re on track for the road map [to reopening], because this data shows that the vaccine, after two doses, works just as effectively [against the Indian variant],” Health Secretary Matt Hancock told broadcasters. (VOA) -jlo

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