Single dose only 33% effective against B.1.617.2 variant : U.K.

A single dose of the AstraZeneca vaccine, in the United Kingdom, was only 33% effective in protecting against symptomatic COVID-19 coronavirus involving the B.1.617.2 variant, first identified in India, as compared to a 59% efficacy from two doses of the vaccine, a study by scientists at Public Health England (PHE) and multiple institutions in the United Kingdom has found.
The finding is significant for India, which is not only heavily reliant on Covishield — the AstraZeneca vaccine — or about 90% of vaccination but also because the scientists who analyse genome variants in India report that the B.1.617.2 variant is increasingly becoming the dominant variant in India.