Britain says Pfizer vaccine is effective against a variety of mutated viruses

Two doses of the Novel Coronavirus vaccine worked almost as well against a fast-spreading variant of the virus first discovered in India as against the main strain circulating in Britain, British health officials said on Monday.

A study by Public Health England found that after two weeks of a second dose of the vaccine, the Pfizer/Bienteke vaccine was 88 per cent effective against diseases caused by the Indian B.1.617.2novel coronavirus variant, the report said.
By comparison, the vaccine was 93 percent effective against the B.1.1.7 strain.
B.1.1.7 The novel coronavirus strain is the main novel coronavirus variant circulating in the UK.
Public Health England said two doses of the AstraZeneca vaccine were 60% effective against disease caused by the B.1.617.2 strain and 66% effective against the B.1.1.7 strain.

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