Why some COVID-19 strains are more infectious than others

Why some COVID-19 strains are more infectious than others
The researchers explained that the first step in coronavirus infection is for the virus to enter cells.
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Updated: Feb 28, 2021, 04:45 PM IST
 A team of researchers has discovered one reason that likely makes SARS-CoV-2, the virus that causes Covid-19, so much more infectious than SARS-CoV-1, which caused the 2003 SARS outbreak.
The coronaviruses that cause SARS and Covid-19 have spike proteins that move into `active` and `inactive` positions, and the study indicates how those molecular movements may make the Covid-19 virus more infectious compared to the SARS virus, according to researchers, including one of Indian-origin named Vivek Govind Kumar.

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