Suspected Legionnaires’ Disease in Bogalusa

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1、CentersforDiseaseControlandPreventionEpidemiologyProgramOfficeCaseStudiesinAppliedEpidemiologyNo.912-303SuspectedLegionnaires’DiseaseinBogalusaStudent'sGuideLearningObjectivesAftercompletingthiscasestudy,theparticipantshouldbeableto:GDiscusstherelationshipbetweenandrolesofstate-basedandAtlanta-

2、basedEISofficersinafieldinvestigation;GDevelopanepidemiologiccasedefinition;GCalculatepowerforacase-controlstudy;GDescribedifferentsourcesofcontrolsforacommunity-basedoutbreak.Thiscasestudyisbasedonaninvestigationconductedin1989bytheLouisianaDepartmentofHealthandHospitalsandtheCentersforDisease

3、Control.Thiscasestudywasdevelopedin1991byFrankMahoney,JohnHoran,andRichardDicker.Thecurrent(1998)versionwasupdatedandeditedbyRichardDicker,withcommentsandinputfromthe1998EISSummerCourseinstructors.U.S.DEPARTMENTOFHEALTHANDHUMANSERVICESPublicHealthServiceCDC-EIS,2003:Legionnaires’inBogalusa(912-

4、303)-Student'sGuidepage2PARTIOnOctober31,1989,theLouisianaDepartmentClinicalhistoriesfromseveralpatientsofHealthandHospitals(LDHH)wasnotifiedbysuggestedthattheillnessmayhavebeentwophysiciansinBogalusa,LouisianathatoverLegionnaires’disease,causedbyinfectionwith50casesofacutepneumoniahadoccurredt

5、hebacteriumLegionellapneumophila.amonglocalresidents.Mostcaseshadoccurredwithina3-weekintervalfrommid-toYouaretheEISOfficerassignedtothelateOctober.Allcaseshadoccurredinadults.EpidemiologySectionoftheLDHH.Sixpersonshaddied.Question1:Ifyouhadtakenthiscall,whatadditionalinformationwouldyourequest

6、overthetelephone?SerologictestingofseveralpatientsduringthebeencollectedforLegionnaires’testing,sinceinitialphaseofillnesshadbeennegativeforthehospital’slaboratorywasnotabletoperformLegionellaantibody.Nosputumspecimenshadthetests.Question2:Ingeneral,besidesatrueoutbreak,whatelsecanaccountforasu

7、ddenincreaseinthenumberofcasesofaparticulardiseasetobereportedtoahealthdepartment?Question3:AssumingyouwilldepartforBogalusatoconductafieldinvestigation,whatsortsofpreparationsdoyouneedtomake?CDC-EIS,2003:Legionnaires’inBogalusa(9