The B.1.617.2 variant of Covid-19 also known as

The B.1.617.2 variant of Covid-19 also known as

A. Alpha Variant

B. Beta Variant

C. Gamma Variant

D. Delta Variant

Explanation:

The B.1.617.2 variant of Covid-19 also known as Delta Variant according to WHO nomenclature, constituted nearly three in four breakthrough infections in Delhi, according to a research study by scientists in Delhi.Breakthrough infections are instances of people testing positive for the virus after getting vaccinated.