Name: UK variant not more contagious than Indian strain: NIV
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UK variant not more contagious than Indian strain: NIV

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The(B.1.1.7) of the coronavirus did not appear to be more transmissible than the variant of the virus most common in India, according to a study by scientists at the National Institute of Virology, Pune.The study was based on tests on Syrian hamsters, a commonly employed laboratory animal, and is yet to be formally peer-reviewed.B.1.1.7, the variant of the coronavirus has mutations that enable it to spread more readily among people and was linked to a sharp spike in cases in the United Kingdom last December. Some vaccine trials have also shown reduced efficacy in those affected with the variant.India has registered 771 cases of the three ‘variants of concern’ reported internationally. Of these 736 have been from B.1.1.7. Health authorities in Punjab said aboutand, therefore, were likely linked to the spurt in the State.To establish how quickly the strain spread, NIV scientists infected two groups of nine hamsters, with one group give the B.1.1.7 and the other the dominant SARS-CoV-2 strain in India. The latter is characterised by a mutation called D614G that, early last year, made it the dominant strain globally.The hamsters were further broken into smaller groups and compared with other sets of hamsters to see if those inoculated with the variants, spread their germs. This was done by housing the hamsters in close proximity in cages and analysing virus levels in the faeces as well measuring the body weight of the hamsters — a proxy for how sick the virus made them.To study the spread of virus via ‘fomites’ (surfaces), viral particles on the surfaces that the hamsters had been in contact with such as beddings, water nozzle, cage surfaces, were also evaluated.“The day-wise comparison of the body weight loss and the viral shedding pattern in contact hamsters by both variants... did not show any statistical significance. Also the comparison of different routes of transmission by each variant... also did not show any statistical significance,” the authors reported.In an earlier study, the NIV scientists had reported that hamsters with the B.1.1.7 shed more virus particles as determined from measuring virus samples in their nasal fluids.“The study demonstrated comparable transmission efficiency of both UK and D614G variants of SARS-CoV-2 in Syrian hamsters,” the more recent study said.This article is closed for comments.PleasePrintable version | Sep 12, 2022 5:06:12 pm |https://www.thehindu.com/sci-tech/health/uk-variant-not-more-contagious-than-indian-strain-niv/article34192523.ece© THG PUBLISHING PVT LTD.

The(B.1.1.7) of the coronavirus did not appear to be more transmissible than the variant of the virus most common in India, according to a study by scientists at the National Institute of Virology, Pune.The study was based on tests on Syrian hamsters, a commonly employed laboratory animal, and is yet to be formally peer-reviewed.B.1.1.7, the variant of the coronavirus has mutations that enable it to spread more readily among people and was linked to a sharp spike in cases in the United Kingdom last December. Some vaccine trials have also shown reduced efficacy in those affected with the...

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Jacob Koshy

thehindu.com

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UK variant not more contagious than Indian strain: NIV

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