SkipdirectlytositecontentSkipdirectlytopageoptionsSkipdirectlytoA-ZlinkPneumoniaSectionNavigationCDCHomeFacebookTwitterLinkedInSyndicateAtypicalPneumoniaMinusRelatedPagesChlamydiapneumoniaeInfectionThisillness,causedbyChlamydiapneumoniae,ismostcommoninschool-agedchildrenandusuallydevelopsintomildpneumoniaorbronchitis…Legionnaires’DiseaseLegionellapneumophilacausesmorethan90%ofoutbreaksofLegionnaires’disease,asevereformofpneumonia…MycoplasmapneumoniaeInfectionThisgenerallymildillnessisacommoncauseof"walkingpneumonia"…PsittacosisPeoplegetthissometimesseriousillness,causedbyChlamydophila(orChlamydia)psittaci,frominfectedpetbirds(parrots,parakeets)andpoultry(turkeys,ducks)…Pneumoniaisaninfectionofthelungsthatviruses,bacteria,andfungicancause.Acommoncauseoftypicalbacterialpneumoniais Streptococcuspneumoniae.Beforemoderndiagnostictestswereavailable,researchersnoticedthatsomepneumoniashaddifferentcharacteristicscomparedto“typical”pneumonias,suchasCausedslightlydifferentsymptomsthantypicalpneumoniaAppeareddifferentonachestX-raythantypicalpneumoniaorRespondeddifferentlytoantibioticsthatwereusedfortypicalbacteriaTheycalledthese“atypical”.Nowresearchersusuallyconsiderbacteriaasbeing“atypical”iftheyarehardtodetectthroughstandardbacterialmethods.These“atypical”bacteriaincludeChlamydiapneumoniaeChlamydiapsittaciLegionellapneumophilaMycoplasmapneumoniaeEventhoughtheseinfectionsarecalled“atypical,”theyarenotuncommon. CommonTypesofPneumoniaCausedbyAtypicalBacteriaChlamydiapneumoniaeInfectionThisillness,causedbyChlamydiapneumoniae,ismostcommoninschool-agedchildrenandusuallydevelopsintomildpneumoniaorbronchitis…PsittacosisPeoplegetthissometimesseriousillness,causedby Chlamydia psittaci,frominfectedpetbirds(parrots,parakeets)andpoultry(turkeys,ducks)…Legionnaires’DiseaseLegionnaires’diseaseisaseveretypeofpneumoniathatiscausedbyatypeofbacteriacalledLegionella…MycoplasmapneumoniaeInfectionThisgenerallymildillnessisacommoncauseof“walkingpneumonia”…HowDoYouSayThat?Findpronunciationguidesbe