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Still no clarity on strain-specific deaths as India toll close to 5K
There is no data currently available that can clearly say that there are strain-specific differences among SARS-CoV-2 viruses, which are leading to more deaths, says Jeffrey Townsend, Professor at Yale University.
New Delhi: There is no data currently available that can clearly say that there are strain-specific differences among SARS-CoV-2 viruses, which are leading to more deaths, says Jeffrey Townsend, Professor at Yale University. He also said the virus does not concern itself with geography, nation, race, or strain.
Queried on the L-strain of the coronavirus behind many deaths, Townsend said "There is no data currently available that persuasively argue that there are strain-specific differences among SARS-CoV-2 viruses. Most stories regarding these differences are likely the product of wishful thinking or fear-mongering."
In April end, the high mortality rate due to Covid-19 in Gujarat was reportedly attributed to the "L- strain", though it is yet to be established. It was suspected that L-type strain is more virulent, as opposed to "S-strain."
India on Saturday was just 30 short of the 5,000 deaths due to the pandemic so far, even as it recorded the highest jump in single day almost touching 8,000 positive cases as its total tally breached 1.73 lakh.
Queried whether people will develop lasting antibodies to protect them from this infection, Townsend, who is Elihu Professor of Biostatistics and Ecology & Evolutionary Biology at the Yale School of Public Health, said there are two answers to this question.
"The first is that we simply do not know which is legitimate to say because data on this specific virus that would answer that question do not exist yet. However, there is a second answer -- also legitimate -- which is that SARS-CoV-2 is evolutionarily closely related to SARS, MERS, and the beta-coronaviruses that cause "common colds", and is unlikely to have evolved a dramatically different relationship with our mammalian immune system" added Townsend.
