Vaccine effectivenessElaborating on the effectiveness of the Covid-19 vaccine against the Lambda variant of SARS-CoV-2, Prof. Seneviratne said that two laboratory studies have so far been conducted on the efficacy of the Covid-19 vaccine against this strain. He said this study suggested the Lambda variant was better able to escape antibodies produced by the Sinovac vaccine. He said the study also found the Lambda variant to show a twofold increase in infectivity (that was attributed to the L452Q mutation). Some experts have proposed giving a third vaccine dose as a booster to improve the effectiveness, and this is currently being done in some Middle Eastern countries. He added that the Lambda variant has spread from South America to North America and Europe.

Source: The Nation July 11, 2021 16:41 UTC