SkipdirectlytositecontentSkipdirectlytopageoptionsSkipdirectlytoA-ZlinkNipahVirus(NiV)SectionNavigationCDCHomeFacebookTwitterLinkedInSyndicateSignsandSymptomsMinusRelatedPagesInfectionwithNipahvirus(NiV)cancausemildtoseveredisease,includingswellingofthebrain(encephalitis)andpotentiallydeath.Symptomstypicallyappearin4-14daysfollowingexposuretothevirus.Theillnessinitiallypresentsas3-14daysoffeverandheadache,andoftenincludessignsofrespiratoryillness,suchascough,sorethroat,anddifficultybreathing.Aphaseofbrainswelling(encephalitis)mayfollow,wheresymptomscanincludedrowsiness,disorientation,andmentalconfusion,whichcanrapidlyprogresstocomawithin24-48hours.Symptomsmayinitiallyincludeoneorseveralofthefollowing:FeverHeadacheCoughSorethroatDifficultybreathingVomitingSeveresymptomsmayfollow,suchas:Disorientation,drowsiness,orconfusionSeizuresComaBrainswelling(encephalitis)Deathmayoccurin40-75%ofcases.Long-termsideeffectsinsurvivorsofNipahvirusinfectionhavebeennoted,includingpersistentconvulsionsandpersonalitychanges.Infectionsthatleadtosymptomsandsometimesdeathmuchlaterafterexposure(knownasdormantorlatentinfections)havealsobeenreportedmonthsandevenyearsafterexposure.Pagelastreviewed:October6,2020Contentsource:CentersforDiseaseControlandPrevention,NationalCenterforEmergingandZoonoticInfectiousDiseases(NCEZID),DivisionofHigh-ConsequencePathogensandPathology(DHCPP),ViralSpecialPathogensBranch(VSPB)homeNipahVirus(NiV)WhatisNipahVirus?TransmissionSigns&SymptomsDiagnosisTreatmentPreventionResourcesRelatedLinksAboutVSPB(ViralSpecialPathogensBranch)FacebookTwitterLinkedInSASstatsExitNotification/DisclaimerPolicyCloseLinkswiththisiconindicatethatyouareleavingtheCDCwebsite.TheCentersforDiseaseControlandPrevention(CDC)cannotattesttotheaccuracyofanon-federalwebsite.Linkingtoanon-federalwebsitedoesnotconstituteanendorsementbyCDCoranyofitsemployeesofthesponsorsortheinformationandproductspresentedonthewebsite.Youwillbesubjecttothedestinationwebsite'sprivacypolicywhenyoufollowthelink.CDCisnotre