Why pangolins may not be the intermediate host for SARS-CoV-2 virus
Pangolin coronavirus produced moderate disease in hamsters and was less virulent
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Author: Prasad Ravindranath
COVID-19 booster dose may not alter disease severity trend
A cross-sectional survey of nearly 6,000 people across age groups including those over 80 years of age carried out through
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Why cats and dogs are less susceptible to Omicron
The progenitor of the Omicron variant might have emerged in mice and then spread to humans
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COVID-19 immunity following infection lasts up to 19 months
Hybrid immunity after one and two doses of vaccine was associated with 94% and 90% lower risk of hospitalisation, respectively
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Not mild for all: On community transmission of Omicron
India has admitted community transmission in the belief Omicron is mild Even at the peak of the second wave in
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T cell immune responses seen a year after infection
Strong and longstanding T cell responses were seen even when people were not reinfected or vaccinated
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Recombination of two virus variants seen since 2020
The Alpha and Wuhan strain recombinant was the first; the latest is a mixture of two Omicron sub-lineages Mutations are
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Children more unlikely to produce antibodies against SARS-CoV-2 virus
Study comparing adults and children was done when Wuhan strain was in circulation; results may not hold true for Delta and Omicron
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Variants do not always evolve to become less virulent
Since transmission begins before symptoms set in and the disease becomes severe, its characteristic is decoupled from disease
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Why Omicron sub-lineage BA.2 spreads faster than BA.1
A few studies are now discovering that BA.2 sub-lineage has even higher propensity than BA.1 to spread among people
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Human challenge study finds high viral shedding in asymptomatic people
The study first detected the virus in the throat and the nose two days before peak symptoms showed up
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IGIB develops future-proof primers, kits for RT-PCR test for SARS-CoV-2
The pool of primers has been developed to target regions of the virus which are unlikely to undergo mutations
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Faster spread of Omicron is not due to higher viral load
Omicron has replaced the Delta variant, which was considered highly transmissible, in almost every country across the world
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