The Delta variant of the SARS-CoV-2 virus, which has become the dominant strain in India and many other countries, most likely spread through its ability to evade neutralising antibodies and increased...

The reported breakthrough Covid-19 infections in India are well within the expected numbers taking into account the total infections and other factors, genome sequencing government consortium INSACOG ...

A new variant of SARS-CoV-2, the virus which causes Covid-19, has been detected in South Africa and many other countries globally which could be more transmissible and evade protection provided by vac...

A single dose of the homegrown Covaxin in people already infected with Covid-19 is equivalent to two doses in uninfected persons, the country’s health research agency said on Saturday after a pr...

The US intelligence community has failed to reach any firm conclusion on the exact origin of Covid-19 and is split on whether it leaked from a lab in China or emerged in nature, even though it does no...

Breakthrough infections of coronavirus cases comprise a very high proportion of the Delta variant, the INSACOG, a genome sequencing government consortium of laboratories, has said. The continuing Cov...

Vaccine stockpiling by nations may strongly impact global trajectories of COVID-19 case numbers, and increase the potential emergence of novel variants of the SARS-CoV-2 virus, a modelling study has w...

Walking on the roads the other day, I found myself thinking how nothing much seems to have changed from before the pandemic. Now that things have opened up again, Calcutta traffic has reverted to bein...

Calcutta scientists have discovered that immune system cells calibrate their responses to inflammation by chemically “talking” to each other. Their work provides fresh insights into the p...

The levels of IgG antibodies against SARS-CoV-2 remain stable, or even increase, seven months after infection, according to a study of healthcare workers published in the journal Nature Communications...