West Nile Virus Disease Cases by State 2020

West Nile Virus Disease Cases* and Presumptive Viremic Blood Donors by State – United States, 2020 (as of September 22, 2020)

West Nile Virus Disease Cases and Presumptive Viremic Blood Donors by State – United States, 2020
State Neuroinvasive
Disease Cases†
Non–neuroinvasive
Disease Cases
Total
cases
Deaths Presumptive viremic
blood donors‡
Alabama 3 0 3 0 0
Arizona 6 1 7 1 0
Arkansas 1 0 1 0 0
California 33 13 46 1 7
Colorado 6 13 19 0 6
Connecticut 0 1 1 0 0
Florida 22 5 27 1 37
Georgia 3 0 3 0 0
Illinois 4 1 5 0 0
Iowa 1 0 1 0 0
Louisiana 4 0 4 2 2
Massachusetts 6 1 7 0 1
Michigan 12 1 13 0 2
Mississippi 1 3 4 0 0
Missouri 1 0 1 0 0
Nebraska 0 1 1 0 1
New Mexico 3 0 3 0 0
New York 2 1 3 1 1
Pennsylvania 0 2 2 0 0
South Carolina 3 0 3 0 2
South Dakota 1 4 5 0 0
Texas 10 0 10 0 25
Virginia 1 1 2 0 1
Washington 0 2 2 0 0
Wisconsin 1 0 1 0 0
Totals 124 50 174 6 85

*Includes confirmed and probable cases.

†Includes cases reported as meningitis, encephalitis, or acute flaccid paralysis.

‡Presumptive viremic blood donors (PVDs) are people who had no symptoms at the time of donating blood through a blood collection agency, but whose blood tested positive when screened for the presence of West Nile virus. Some PVDs develop symptoms after donation.

Please refer to state health department web sites for further details regarding state case totals.