Novavax

American company Novavax, whose COVID-19 vaccine is set to be made in large numbers by the Pune-based Serum Institute of India (SII), has reported that its vaccine has proved to have 89% efficacy in preventing the infection in some trial volunteers in the United Kingdom.
However, the efficacy dropped to 60% when it was tested in volunteers in South Africa, a likely consequence of a mutant coronavirus variant that is now deep-rooted there.
Since December, scientists have raised concerns over mutated variants, particularly those isolated in the U.K., South Africa and Brazil that harbour changes, allowing the virus to cheat the immune system.
These variants are being linked to renewed waves of the virus, but haven’t been shown to be more lethal. Researchers associated with the trial said 60% efficacy was good news as nearly 90% of those who participated were affected by the South African variant.

Source: TH

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