Statistics and Maps - 2020

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CDC Disease Maps

Map of the United States showing WNV Human disease cases.

National & state maps (including county-level data) from 2003 – present.

Dengue cases in the US

  • Dengue virus disease became a nationally notifiable condition in 2010.
  • Cases are reported to CDC by state, territorial, and local health departments using standard case definitions.

Provisional data* as of  October 14, 2020

  • This webpage contains provisional data reported to ArboNET for 2020.

US States

  • 229 dengue cases reported

US Territories

  • 349 dengue cases reported

States and territories reporting dengue cases – United States, 2020 (as of October 14, 2020)

Map of the United States showing Laboratory-positive travel-associated and locally-acquired dengue cases as of September 23, 2020. See table below.

*CDC reports provisional dengue case counts reported to ArboNET for the United States and its territories on the first Thursday of each month.

Table 1: Dengue cases reported to ArboNET by state or territory of residence – United States, 2020 (as of October 14, 2020)

Laboratory-positive travel-associated and locally-acquired dengue cases from the 50 states and territories – United States
Travel-associated cases
No. (%)		 Locally-transmitted cases
No. (%)
State  (N=165) (N=64)
Arizona 3 (2) 0 (0)
Arkansas 1 (1) 0 (0)
California 38 (23) 0 (0)
Colorado 3 (2) 0 (0)
Delaware 1 (1) 0 (0)
District of Columbia 2 (1) 0 (0)
Florida 29 (18) 64 (100)
Hawaii 4 (2) 0 (0)
Illinois 7 (4) 0 (0)
Indiana 2 (1) 0 (0)
Iowa 1 (1) 0 (0)
Louisiana 3 (2) 0 (0)
Maryland 3 (2) 0 (0)
Massachusetts 9 (5) 0 (0)
Michigan 1 (1) 0 (0)
Missouri 2 (1) 0 (0)
Nebraska 1 (1) 0 (0)
Nevada 1 (1) 0 (0)
New Jersey 2 (1) 0 (0)
New Mexico 1 (1) 0 (0)
New York 4 (2) 0 (0)
North Carolina 4 (2) 0 (0)
Ohio 2 (1) 0 (0)
Oregon 6 (4) 0 (0)
Pennsylvania 3 (2) 0 (0)
South Carolina 1 (1) 0 (0)
South Dakota 1 (1) 0 (0)
Tennessee 1 (1) 0 (0)
Texas 9 (5) 0 (0)
Utah 1 (1) 0 (0)
Virginia 4 (2) 0 (0)
Washington 8 (5) 0 (0)
Wisconsin 6 (4) 0 (0)
Travel-associated cases
No. (%)		 Locally-transmitted cases
No. (%)
Territories (N=1) (N=348)
Guam 0 (0) 2 (1)
Puerto Rico 1 (100) 346 (99)

 

Page last reviewed: October 15, 2020
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)