Health authorities first identified the Delta variant of Sars-CoV-2 in Bangladesh on May 8

The researchers cautioned that the study only had a small sample size of people infected with the South...

Researchers at icddr,b analyzed genomic sequences of around 57 samples between March 18 and 24 of Covid-19...

The government has said the South African and Brazilian strains can more easily infect a person's...

The study found the vaccine was still able to neutralize the virus and there is not yet evidence from...

Earlier, Oxford said their vaccine has similar efficacy against the British coronavirus variant as it...