As of May 25, 2021, a total of 664 cases of West Nile virus disease in people have been reported to CDC. Of these, 505 (76%) were classified as ...SkipdirectlytositecontentSkipdirectlytopageoptionsSkipdirectlytoA-ZlinkWestNilevirusSectionNavigationCDCHomeFacebookTwitterLinkedInSyndicatePreliminaryMaps&Datafor2020MinusRelatedPagesCDCDiseaseMapsNational&statemaps(includingcounty-leveldata)from2003–present.AsofMay25,2021,atotalof664casesofWestNilevirusdiseaseinpeoplehavebeenreportedtoCDC.Ofthese,505(76%)wereclassifiedasneuroinvasivedisease(suchasmeningitisorencephalitis)and159(24%)wereclassifiedasnon-neuroinvasivedisease.WestNileVirusDiseaseCases&PresumptiveViremicBloodDonorsbyState[Table]WestNileVirusActivitybyState[Map]WestNileVirusNeuroinvasiveDiseaseIncidencebyState[Map]National&statemaps(includingcounty-leveldata)from2003–present.Pagelastreviewed:May25,2021Contentsource:CentersforDiseaseControlandPrevention,NationalCenterforEmergingandZoonoticInfectiousDiseases(NCEZID),DivisionofVector-BorneDiseases(DVBD)homeWestNileVirusHomePreventionSymptoms,Diagnosis,&TreatmentTransmissionplusiconBloodTransfusionandOrganDonationMothertoBabyduringPregnancy,Delivery,orBreastFeedingStatistics&MapsplusiconPreliminaryMaps&Datafor2021plusiconDiseaseCasesbyStateActivitybyStateIncidencebyStatePreliminaryMaps&Datafor2020plusiconDiseaseCasesbyStateActivitybyStateIncidencebyStateFinalMaps&Datafor1999–2019plusiconCumulativeMaps&DataAnnualMaps&DataWestNileVirus&DeadBirdsMosquitoControlplusiconAerialSprayingForHealthcareProvidersplusiconClinicalEvaluation&DiseaseDiagnosticTestingTreatment&PreventionResourcesplusiconCommunicationResourcesGuidelines&PublicationsSurveillanceResourcesRelatedLinksMosquitoSurveillanceSoftwareFacebookTwitterLinkedInSASstatsExitNotification/DisclaimerPolicyCloseLinkswiththisiconindicatethatyouareleavingtheCDCwebsite.TheCentersforDiseaseControlandPrevention(CDC)cannotattesttotheaccuracyofanon-federalwebsite.Linkingtoanon-federalwebsitedoesnotconstituteanendorsementby