QUESTIONS WITH CORRECT
ANSWERS 2025/2026
133.AAllAofAtheAfollowingAwouldAbeAconsideredApreventionAstrategiesAtoAreduceAtheAtransmissi
onAofAinfectionsAinAaAhealthcareAsettingAexcept:
a.AImplementingAanAinfluenzaAvaccineAprogramAforAemployees
b.AEducatingAstaffAmembersAinAPPEAusage
c.ADecolonizationAofAMRSA-positiveApatientsApriorAtoAsurgery
d.AInstitutingAuseAofAbleachAforAcleaningAC.AdifficilA-
AcorrectAanswers133.ACADecolonizationAofAMRSA-positiveApatientsApriorAtoAsurgery
Rationale:APreventionAstrategiesAinAhealthcareAinfectionApreventionAareAwideArangingAandAdep
endAonAtheAdiseaseAinAquestionAandAwhatAinformationAisAavailableAtoAtheApractitioner.APrevent
ionAstrategiesAtoAreduceAtheAriskAofAtransmission,AincludingAbarrierAprecautions;Aimmunization
sAofAHCP;AandAcleaning,Asterilization,AandAdisinfectionAareAdesignedAtoApreventAtheAoccurrence
AofAdiseaseAand,Atherefore,AformAprimaryApreventionAmeasures.ACurrentAdecolonizationAproto
colsAusingAintranasalAmupirocinAandAchlorhexidineAbodyAwashesAareAeffectiveAforAreducingAM
RSAAcolonizationAinAsurgicalApatients.ATheApurposeAofAthisAtreatmentAisAtoApreventASSIsAinAtheAi
ndividualApatients.AItAisAnotAdesignedAtoApreventAtheAspreadAofAMRSAAtoAotherApatients.
1.ATheAbacteriumAmostAlikelyAtoAbeAtransmittedAfromAmotherAtoAinfantAduringAlaborAandAcause
AneonatalAsepsisAis:
a.AEscherichiaAcoli
b.AStaphylococcusAaureus
c.AGroupABAStreptococcus
d.AGroupAAAStreptococcusA-AcorrectAanswers1.ACAGroupABAStreptococcus
Rationale:AInAGroupABAStreptococcusA(GBS)AneonatalAinfections,AheavyAmaternalAcolonizationAi
sAassociatedAwithAanAincreasedAriskAforApretermAlabor,AwhichAinAturnAisAaAsignificantAriskAactorAf
orAneonatalAinfection.AIntrauterineAinfectionAofAtheAfetusAthereforeAlikelyAoccursAviaAascending
AspreadAofAGBSAfromAtheAvaginaAofAaApregnant,AasymptomaticallyAcolonizedAwomanAandAsubs
equentAruptureAofAmembranesAbeforeA37Aweeks'Agestation.
,2.AWhichAofAtheAfollowingAisAanAexampleAofAtheAcriterionAofA"StrengthAofAtheAAssociation"Afro
mAHill'sAcriteriaAforAcausation?
a.AInAaAstudyAofAtheAassociationAbetweenAantibioticAexposureAandAdevelopmentAofAC.AdifficilAin
fection,AtheAoddsAratioAwasA2:3
b.AInAaAstudyAofAtheAassociationAbetweenAantibioticAexposureAandAdevelopmentAofAC.AdifficilAin
fection,AtheAauthors'AconclusionsAareAconsistentAwithAthoseAofAthreeAotherAstudies
c.AInAaAstudyAofAtheAassociationAbetweenAantibioticAexposureAandAdevelopmentAofAC.AdifficilAin
fection,AantibioticAtherapyAbeganAanAaverageAofA3AweeksAbeforeAC.AdifficilAinfectionAdeveloped
d.AInAaAstudyAofAtheAassociationAbetweenAantibioticAexposureAandAdevelopmentAofAC.AdifficilAin
fection,AprolongedAantibioticAtherapyAwasAaAgreaterAriskAfactorAforAC.AdifficilAinfectionAthanAsho
rt-termAantibioticAtherapyA-
AcorrectAanswers2.AAAInAaAstudyAofAtheAassociationAbetweenAantibioticAexposureAandAdevelop
mentAofAC.AdifficilAinfection,AtheAoddsAratioAwasA2:3
Rationale:ACausalAassociationsAexistAwhenAevidenceAindicatesAthatAoneAfactorAisAclearlyAshown
AtoAincreaseAtheAprobabilityAofAtheAoccurrenceAofAaAdisease.AInAaAcausalArelationship,AtheAredu
ctionAorAdiminutionAofAaAfactorAdecreasesAtheAfrequencyAofAtheAdiseaseAbeingAstudied.ATheAcri
teriaAcurrentlyAusedAforAcausalityAwereAdevelopedAbyAAustinABradfordAHillAandAareAknownAasAH
ill'sAcriteria.ATheseAcriteriaAuseAmodernAepidemiologicalAmethodsAtoAdetermineAwhetherAaAfac
torAisAcausalAforAaAgivenAdisease.AStrengthAofAassociationAisAtheAfirtAcriterion:ATheAincidenceAofA
diseaseAshouldAbeAhigherAinAthoseAwhoAareAexposedAtoAtheAfactorAunderAconsiderationAthanAi
nAthoseAwhoAareAnotAexposed;AthatAis,AtheAstrongerAtheAassociationAbetweenAanAexposureAand
AaAdisease,AtheAmoreAlikelyAtheAexposureAisAtoAbeAcausal.ATheAoddsAratioAisAaAstatisticalAmeasur
eAthatAgivesAusAanAindicationAofAhowAstronglyAtheAriskAfactorAisAassociatedAwithAtheAdiseaseAou
tcome.
3.AWhichAofAtheAfollowingArulesAshouldAbeAfollowedAwhenAcollectingAaAstoolAsampleAforAC.Adiffi
cilAtesting?
1)AStoolAsampleAshouldAbeAfreshlyApassedAwithinA1-2Ahours
2)A10-20mL.AofAformedAstoolAshouldAbeAcollected
3)AStoolAshouldAbeApassedAintoAaAclean,AdryAcontainer
4)ASpecimensAshouldAbeAobtainedAbeforeAantimicrobialAagentsAhaveAbeenAadministered
a.A1,A2
b.A2,A3
c.A1,A3
,d.A1,A4A-AcorrectAanswers3.ACA1,A3
Rationale:ATheAaccuracyAofAallAtestsAdependsAonAproperAspecimenAhandlingAandAtransport.ATh
eAfollowingArulesAshouldAbeAfollowedAwhenAcollectingAsamplesAforAC.AdifficilAtesting:•AStoolAsa
mplesAshouldAbeAfreshlyApassedAwithinA1-2Ahours•A10-
20AmLAofAwatery,Asoft,AorAunformedAstoolAshouldAbeAcollected•AStoolAshouldAbeApassedAintoAaA
clean,AdryAcontainer
4.AWhatAtypeAofAmeningitisAwouldAbeAmostAconsistentAwithAtheAfollowingAcerebrospinalAfluidA
CSF)AreportAresult:A
GlucoseADecreased
ProteinAElevated
WBCAcounts1,000/mm3
a.ABacterial
b.AViral
c.AFungal
d.ATuberculosisA-AcorrectAanswers4.AAABacterial
Rationale:ACultureAofAbloodAandACSFAareAindicatedAforApatientsAwithAsuspectedAinvasiveAmenin
gococcalAdisease.ATheACSFAofApatientsAwithAuntreatedAmeningococcalAmeningitisAisAusuallyAclo
udyAandAhasApleocytosisAwithAaApredominanceAofAneutrophils,AlowAglucose,AandAhighAproteinAl
evels.AInAmostAofAtheAcases,AtheAorganismsAareAseenAonAGramAstainAorAcanAbeAidentifiedAusingl
atexAagglutinationAassays.ATheAcultureAisAalmostAinvariablyApositiveAasAlongAasAtheAsampleAwas
AobtainedAbeforeAtheAadministrationAofAantibiotics.
5.ATheAfollowingAbloodAcultureAresultAshouldAbeAconsideredAaApotentialAcontaminant:
a.AAApositiveAresultAofAcoagulase-
negativeAstaphylococciAfromAtwoAsets,A2AdaysAapart,AwithoutAsymptoms
b.AAApositiveAresultAofAS.AaureusAfromAoneAbottleAinAaApatientAwithAaAtemperatureAofA38.6°C
c.AAApositiveAresultAofAE.AcoliAfromAoneAbottleAinAanAafebrileApatientAwithAdiarrhea
d.AAApositiveAresultAofACandidaAalbicansAinAaAfungalAbloodAcultureAinAaApatientAwithAaAurinaryAtr
actAinfectionA-AcorrectAanswers5.AAAAApositiveAresultAofAcoagulase-
negativeAstaphylococciAfromAtwoAsets,A2AdaysAapart,AwithoutAsymptoms
, Rationale:AAccordingAtoAtheACDCACLABSIAcriteria,AcommonAcommensalsA(suchAasAcoagulase-
negativeAstaphylococci)AmeetAtheAcriteriaAforAaACLABSIAifAthereAareAtwoApositiveAculturesAfromA
twoAorAmoreAsetsAofAbloodAculturesAdrawnAlessAthanA2AdaysAapartAandAtheApatientAhasAsympto
msA(feverAgreaterAthanA38°C,Achills,AorAhypotension).ACDCACLABSIAcriteria:APatientAhasAatAleastA
oneAofAtheAfollowingAsignsAorAsymptoms:AfeverA(greaterAthanA38°C),Achills,AorAhypotensionAand
ApositiveAlaboratoryAresultsAareAnotArelatedAtoAanAinfectionAatAanotherAsite.AAndAtheAsameAcom
monAcommensalA(i.e.,AdiphtheroidsA[CorynebacteriumAspp.AnotAC.Adiphtheriae],ABacillusAspp.A
[notAB.Aanthracis],APropionibacteriumAspp.,Acoagulase-
negativeAstaphylococciA[includingAS.Aepidermidis],AviridansAgroupAstreptococci,AAerococcusAsp
p.,AandAMicrococcusAspp.)AisAculturedAfromAtwoAorAmoreAbloodAculturesAdrawnAonAseparateAoc
casions.CriterionAelementsAmustAoccurAwithinAaAtimeAframeAthatAdoesAnotAexceedAaAgapAofA1Ac
alendarAdayAbetweenAtwoAadjacentAelements.
6.AWhichAofAtheAfollowingAorganismsAhaveAbeenAassociatedAwithAtheAtransmissionAofAinfection
sAafterAbodyApiercing?
1)AAtypicalAMycobacteriumAspecies
2)AStaphylococcusAspecies
3)APseudomonasAspecies
4)AHaemophilusAspecies
a.A1,A2,A3
b.A2,A3,A4
c.A1,A3,A4
d.A1,A2,A4A-AcorrectAanswers6.AAA1,A2,A3
Rationale:ABodyApiercingAactivitiesAcanAtransmitAinfectiousAdiseases.ABacterialAinfectionsAmayA
resultAfromAimproperAinitialApiercingAtechniqueAorAfromApoorAhygiene.ATheAorganismsAinvolve
dAinAmostAearlobe-
piercingAinfectionsAareAoftenAconsideredAnormalAskinAfloa,AincludingAStaphylococcusAandAStre
ptococcusAspecies.AHigherAearApiercingsAinAtheAearAcartilageAhaveAbeenAassociatedAwithAmoreA
pathogenicAorganisms,AincludingAPseudomonasAspecies.AMultipleAcasesAofAatypicalAMycobact
eriumAinfectionsAafterApiercingAhaveAbeenAreported.
7.ATheADirectorAofAtheAOperatingARoomA(OR)ArequestsAthatAtheAORAsurfacesAbeAroutinelyAenvir
onmentallyAcultured.ATheAIP'sAbestAresponseAshouldAbe:
a.AAAscheduleAforAroutineAculturingAofAtheAORAshouldAbeAarrangedAsoAthatAeachAroomAisAcultur
edAatAaAsetAinterval