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https://www.cdc.gov/coronavirus/2019-ncov/transmission/variant-cases.html

US COVID-19 Cases Caused by Variants

Updated Mar. 23, 2021

Variant

Reported Cases in US

Number of Jurisdictions Reporting

B.1.1.7

7501

51

B.1.351

219

27

P.1

61

18

LocationB.1.1.7 VariantP.1. VariantB.1.351 Variant
Alabama9400
Alaska210
American Samoa000
Arizona6240
Arkansas200
California47144
Colorado335011
Connecticut28317
Delaware1501
Florida10422310
Georgia351115
Guam000
Hawaii1305
Idaho1602
Illinois16663
Indiana6800
Iowa6300
Kansas2700
Kentucky2500
Louisiana4000
Maine701
Marshall Islands000
Maryland291125
Massachusetts44149
Michigan98602
Micronesia000
Minnesota31723
Mississippi2401
Missouri800
Montana800
Nebraska3420
Nevada1001
New Hampshire4600
New Jersey38931
New Mexico1700
New York13601
North Carolina160026
North Dakota700
Northern Marianas000
Ohio15810
Oklahoma010
Oregon1610
Palau000
Pennsylvania19801
Puerto Rico100
Rhode Island700
South Carolina45050
South Dakota300
Tennessee16801
Texas41433
Utah15010
Vermont700
Virgin Islands000
Virginia123026
Washington14628
Washington D.C.2801
West Virginia300
Wisconsin6901
Wyoming900
Download Data (CSV)
Filter undefined value has been changed to Variant B.1.1.7, please reference the data table to see updated values.

Download Accessible Data excel icon[CSV – 712 B]

CDC is closely monitoring these variants of concern (VOC). These variants have mutations in the virus genome that alter the characteristics and cause the virus to act differently in ways that are significant to public health (e.g., causes more severe disease, spreads more easily between humans, requires different treatments, changes the effectiveness of current vaccines).

The map above displays reported data on three VOCs, B.1.1.7, B.1.351, and P.1. Variants B.1.427 and B.1.429 have recently been classified as VOCs but are currently not featured on this map. Additional data is available on Variant Proportions in the US.

03/14/21 – To maintain a limited number of colors and allow for an easier comparison between states, the data ranges have changed from 1-100 to 1-150.

*The cases identified above are based on a sampling of SARS-CoV-2-positive specimens and do not represent the total number of B.1.1.7, B.1.351, and P.1 lineage cases that may be circulating in the United States and may not match numbers reported by states, territories, tribes, and local officials.

†Numbers will be updated on Sunday, Tuesday, and Thursday by 7:00 pm.