Variants

According to the CDC, the variants currently detected in the US seem to spread more easily and quickly than past variants, which may lead to more cases of COVID-19.

B.1.1.7 (Alpha): This variant was first detected in the United States in December 2020. It was initially detected in the United Kingdom.

B.1.351 (Beta): This variant was first detected in the United States at the end of January 2021. It was initially detected in South Africa in December 2020.

P.1 (Gamma): This variant was first detected in the United States in January 2021. P.1 was initially identified in travelers from Brazil, who were tested during routine screening at an airport in Japan, in early January.

B.1.617.2 (Delta): This variant was first detected in the United States in March 2021.  It was initially identified in India in December 2020.