West Nile Virus Disease Cases by State 2022
West Nile Virus Disease Cases* and Presumptive Viremic Blood Donors by State – United States, 2022 (as of June 28, 2022)
*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.