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.1.427 and B.1.429: These two variants were first identified in California in February 2021. B.1.617 Delta: This triple mutation variant was first detected in the United States in April 2021. It was initially detected in India. Reduced neutralization by post-vaccination sera In Europe, due to the rapid spread of the variants, governments are mandating medical-grade masks in public spaces such as airports and mass transit. “The overall picture is one of something like a 40 to 60 percent increase in hospitalization risk, and risk of death,” Neil Ferguson, an epidemiologist and scientific adviser to the British government |


SeattlePPE CDC Tested KN95 and N95 Masks

















