COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu
Open or close the search fields display
6894 Studies found for: zero

A similar map is available for all studies in

Click on the map below to show a more detailed map (when available) or search for studies (when map not available).

Map Legend
Region Name Number of Studies
World [map] 6,894
North America 3,384
United States 3,091 [studies]
Alabama 223 [studies]
Alaska 12 [studies]
Arizona 326 [studies]
Arkansas 102 [studies]
California 959 [studies]
Colorado 309 [studies]
Connecticut 263 [studies]
Delaware 18 [studies]
District of Columbia 91 [studies]
Florida 782 [studies]
Georgia 333 [studies]
Hawaii 40 [studies]
Idaho 56 [studies]
Illinois 389 [studies]
Indiana 238 [studies]
Iowa 95 [studies]
Kansas 257 [studies]
Kentucky 182 [studies]
Louisiana 145 [studies]
Maine 38 [studies]
Maryland 352 [studies]
Massachusetts 431 [studies]
Michigan 354 [studies]
Minnesota 310 [studies]
Mississippi 52 [studies]
Missouri 350 [studies]
Montana 49 [studies]
Nebraska 163 [studies]
Nevada 120 [studies]
New Hampshire 49 [studies]
New Jersey 261 [studies]
New Mexico 69 [studies]
New York 615 [studies]
North Carolina 450 [studies]
North Dakota 58 [studies]
Ohio 458 [studies]
Oklahoma 152 [studies]
Oregon 217 [studies]
Pennsylvania 522 [studies]
Rhode Island 76 [studies]
South Carolina 221 [studies]
South Dakota 33 [studies]
Tennessee 389 [studies]
Texas 896 [studies]
Utah 205 [studies]
Vermont 40 [studies]
Virginia 251 [studies]
Washington 276 [studies]
West Virginia 48 [studies]
Wisconsin 205 [studies]
Wyoming 4 [studies]

Click on a [map] link to show a map of that region.

Click on a [studies] link to search within your current results for studies in that region. Use the back button to return to this list and try another region.

Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.