Does the BCG vaccine also protect against the novel coronavirus (SARS-CoV2)? That is a question the scientific community worldwide has been discussing over the past few days.
The Bacillus Calmette-Guérin (BCG) vaccine is a live attenuated strain derived from an isolate of Mycobacterium bovis and has been used widely across the world as a vaccine for tuberculosis.
A live attenuated vaccine means that it uses a pathogen whose potency as a disease producer has been artificially disabled, but whose essential identifying characters, which help the body mount an immune response to it, have been left unchanged.
One study claims a link between low COVID-19 spread and wide BCG coverage. However, other studies have dismissed the claim.
Source : Indian Express