Question

I will mark brainliest.​

Answer 1

Viruses constantly change through mutation, and new variants of a virus are expected to occur over time. Sometimes new variants emerge and disappear. Other times, new variants emerge and persist. Multiple variants of the virus that causes COVID-19 have been documented in the United States and globally during this pandemic.

The virus that causes COVID-19 is a type of coronavirus, a large family of viruses. Coronaviruses are named for the crown-like spikes on their surfaces. Scientists monitor changes in the virus, including changes to the spikes on the surface of the virus. These studies, including genetic analyses of the virus, are helping scientists understand how changes to the virus might affect how it spreads and what happens to people who are infected with it.

The 'triple mutant variant' (also being referred to as the 'Bengal strain' of Covid-19) is reportedly more infectious than other strains.

Reports suggest that while this variant is predominantly circulating in West Bengal, it has also been detected in samples from Delhi and Maharashtra.

Experts say at present there is no conclusive evidence to comment on the impact that this variant can have on vaccines but the presence of E484K mutation in it is a cause for concern.

E484K is a major immune escape variant and is also found in a number of emerging lineages across the world. Immune escape variants are those mutations that help the variant to evade the immune system and possibly result in compromising vaccine efficacy.