Communicable Disease Fact Sheet, Chlamydia. ... Chlamydia is a bacterial infection that is spread through sexual contact with an infected person.skiptomaincontentNavigationmenuDepartmentofHealthIndividuals/FamiliesBirth,Death,Marriage&DivorceRecordsHealthInsuranceProgramsConsumerHealthCareInformationCommunityHealthHealthyLifestylesHealth&SafetyintheHome,Workplace&OutdoorsDiseases&ConditionsData&ReportsHealthTopicsAtoZProviders/ProfessionalsNovelCoronavirusNarcoticEnforcementEMSHealthInitiativesData&ReportsDiseases&ConditionsPatientResourcesDiseaseReportingClinicalGuidelines,Standards&QualityofCarePermits,Licenses&CertificationAllHealthCareProfessionals&PatientSafetyHealthTopicsAtoZHealthFacilitiesAdultCareFacilities/AssistedLivingHomeCare&HospiceHospitals&ClinicsNursingHomesSchoolBasedHealthCentersAllHealthCareFacilitiesHealthTopicsAtoZSearchSearch:YouareHere:HomePage>CommunicableDisease>Chlamydia(chlamydiatrachomatisgenitalinfection)Chlamydia(chlamydiatrachomatisgenitalinfection)LastReviewed:November2006"Chlamydia"isalsoavailableinPortableDocumentFormat(PDF,24KB,2pg.)VersiónenespañolWhatischlamydia?Chlamydiaisabacterialinfectionthatisspreadthroughsexualcontactwithaninfectedperson.Chlamydiaisoneofthemostcommonsexuallytransmitteddiseases(STD);morethan50millioncasesoccurworldwideandapproximatelythreemillioncasesoccurintheUnitedStatesannually.Whogetschlamydia?Anysexuallyactivepersoncanbeinfectedwithchlamydia.Mostoften,chlamydiaoccursinadolescentsandyoungadults(ages15-24)whohavenewormultiplesexpartnersandwhodonotconsistentlyusecondomsorotherbarriercontraception.Howischlamydiaspread?Chlamydiaisspreadthroughsexualcontact.Thisincludespenistovaginaorpenistorectumcontact.Itcanalsobepassedfromthemothertohernewbornduringbirth.Whatarethesymptomsofchlamydia?Becauseapproximately75percentofwomenand50percentofmenhavenosymptoms,mostpeopleinfectedwithchlamydiaarenotawareoftheirinfectionsandmaynotseekhealthcare.Ifmaleshavesymptoms,theymayincludeurethritis(itchingand/orburningonurinati