Home 2 Forums Covid -19 SARS-CoV-2 variants have higher transmissibility and a longer infectious period

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    Sunil Kumar
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    Researchers analyzed data on three variants of concern and found that viral loads were higher and infection lasted longer for the B.1.1.7 variant. They all were more infectious than the original strain, and transmissibility also depended on population demographics.

    For the B.1.1.7 strain, greater transmission was more evident in countries with an older population like Japan (a median advantage of 41%) and France. In contrast, for the B.1.351 and P.1 variants were more evident for countries with a younger population like Niger (median advantage of 26%).

    Thus, the analysis shows the SARS-CoV-2 variants have a higher potential of transmission, which also depends on the population’s demographics. The authors suggest future studies should look at combing the cycle threshold data and the serological data to understand how the B.1.351 and P.1 variants escape our immune response.

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    https://www.news-medical.net/news/20210531/SARS-CoV-2-variants-have-higher-transmissibility-and-a-longer-infectious-period.aspx#

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