Table 1.

SARS-CoV-2 variants and mutations [1].

Date	Variants
April 20	As a variant of interest, B.1.617, a "double mutant" now common in India, was added.
5 March	In a sample from Portland, Oregon, scientists discovered the E484K mutation.
23 February	The B.1.526 variant, which is spreading in New York City, has been added.
23 February	According to studies, the California-discovered variation is more contagious.
17 February	The P.1 variety has been confirmed in Maryland for the first time.
16 February	The B.1.351 variation has been confirmed in Massachusetts for the first time.
15 February	The Q677 spike mutation, discovered in multiple lineages in the United States, has been added.
15 February	In a Connecticut resident hospitalized in New York City, B.1.351 variant has been confirmed.
13 February	According to studies, B.1.1.7 is more dangerous than other circulating forms.
11 February	The B.1.351 variation has been confirmed in Illinois and North Carolina for the first time.
7 February	South Africa has abandoned the use of AstraZeneca's B.1.351 vaccine.
7 February	In the United States, the B.1.1.7 variant doubles every ten days.