NEHA REHS Exam Questions With
100% Correct And Verified Answers
2025
HowidoesitheiInstituteiofiMedicinei(IOM)idefinesitheimissioniofipublici
health?i-iCORRECT ANSWERS-
Asi"fulfillingisociety'siinterestiiniassuringiconditionsiiniwhichipeopleic
anibeihealthy".
Whatiareithei10iEssentialiPubliciHealthiServicesi(ES)?i-iCORRECT
ANSWERS-1.iMonitorihealth
2.iDiagnoseiandiinvestigate
3.iInform,ieducate,iandiempower
4.iMobilizeicommunityipartnerships
5.iDevelopipoliciesiandiplans
6.iEnforceilawsiandiregulations
7.iLinkipeopleitoineededipersonalihealthiservices
8.iAssureiaicompetentiworkforce
9.iEvaluate
10.iResearch
Whatiareithreeiforcesithatimayihelpishapeitheifutureiofitheienvironmen
talihealthiprofession?i-iCORRECT ANSWERS-
1.iClimateichangeiandiresultingiecosystemichangesiandinaturalidisast
ers
2.iPopulationigrowthianditheiglobaliriseiinistandardiofilivingiresultingii
nifasterideteriorationiofitheinaturalienvironment
3.iNovelioripharmaceutical-resistantipathogens
WhatidoesiARECistandifor?i-iCORRECT ANSWERS-
anticipation,irecognition,ievaluation,icontrol
Complianceiandienforcementiinterventionistrategiesicanibeidividediint
oiwhatitwoigroups?i-iCORRECT ANSWERS-
1.iThoseidesigneditoiachieveiimmediateion-siteicorrection.i
2.iThoseidesigneditoiachieveilong-termicompliance.
WhatiisiaiStandardiOperatingiProcedurei(SOP)?i-iCORRECT ANSWERS-
Aistandardioperationiprocedurei(SOP)iisiaiwritteniprocessithatiprovide
siconsistentiguidanceitoiemployeesiwithinianiorganizationiasitoihowith
vendarsol
,eyishouldiproperlyicompleteiaigivenitaskiiniaiuniformimanner.iItiprovid
esidetailedistepsiandidetailsitheitoolsinecessaryitoicompleteitheitask.
WhatiisiMalfeasance?i-iCORRECT ANSWERS-
Theidoingiofianiactithatiisiwrongfuliandithatiisiknownitoibeiwhollyiunau
thorizedibyitheiofficial.
WhatiisiMisfeasance?i-iCORRECT ANSWERS-
Theidoingiofianiauthorizediactiinianiunauthorizedimanner.
WhatiisiNonfeasance?i-iCORRECT ANSWERS-
Theifailureitoiperformianiofficialidutyiwithoutisufficientiexcuse.
Whatiareitheitwoimainitypesiofiepidemiologicalistudiesithaticanibeiuse
diinianiepidemiologicaliinvestigation?i-iCORRECT ANSWERS-
DescriptiveiandiAnalytical.
ActiveiImmunityi-iCORRECT ANSWERS-
Resultsiwheniexposureitoiaidiseaseiorganismitriggersitheiimmuneisyst
emitoiproduceiantibodiesitoithatidisease.iActiveiimmunityicanibeiacqui
redithroughinaturaliimmunityiorivaccine-inducediimmunity
PassiveiImmunityi-iCORRECT ANSWERS-
Wheniaipersoniisigiveniantibodiesitoiaidiseaseiratherithaniproducingith
emithroughihisioriheriowniimmuneisystem.
Agenti(biology/epi)i-iCORRECT ANSWERS-
Aifactori(e.g.,iaimicroorganismiorichemicalisubstance)ioriformiofienerg
yiwhoseipresence,iexcessiveipresence,ioriinitheicaseiofideficiencyidise
ases,irelativeiabsenceiisiessentialiforitheioccurrenceiofiaidiseaseiorioth
eriadverseihealthioutcome.
ModeiofiTransmissioni-iCORRECT ANSWERS-
Theimanneriiniwhichianiagentiisitransmittedifromiitsireservoiritoiaisusc
eptibleihost.
Carrieri-iCORRECT ANSWERS-
Aipersoniorianimalithatiharborsitheiinfectiousiagentiforiaidiseaseiandic
anitransmitiititoiothers,ibutidoesinotidemonstrateisignsiofitheidisease.i
Aicarriericanibeiasymptomatici(neveriindicateisignsiofitheidisease)ioric
anidisplayisignsiofitheidiseaseionlyiduringitheiincubationiperiod,iconva
lescence,ioripostconvalescence.iTheiperiodiofibeingiaicarriericanibeish
orti(aitransienticarrier)iorilongi(aichronicicarrier).
vendarsol
, Morbidityi-iCORRECT ANSWERS-
(disease)iAnyideparture,isubjectiveioriobjective,ifromiaistateiofiphysio
logicalioripsychologicalihealthiandiwell-being.
Mortalityi-iCORRECT ANSWERS-Death
DemographiciInformationi-iCORRECT ANSWERS-
Personalicharacteristicsiofiaipersoniorigroupi(e.g.,iage,isex,irace/ethni
city,iresidence,iandioccupation)idemographiciinformationiisiusediinide
scriptiveiepidemiologyitoicharacterizeipatientsioripopulations.
Pandemici-iCORRECT ANSWERS-
Aniepidemicioccurringioveriaiwidespreadiareai(multipleicountriesiorico
ntinents)iandiusuallyiaffectingiaisubstantialiproportioniofitheipopulati
on.
Endemici-iCORRECT ANSWERS-
Theiconstantipresenceiofianiagentiorihealthiconditioniwithiniaigivenige
ographiciareaioripopulation;icanialsoireferitoitheiusualiprevalenceiofia
niagentioricondition.
Epidemici-iCORRECT ANSWERS-
Theioccurrenceiofimoreicasesiofidisease,iinjury,ioriotherihealthiconditi
onithaniexpectediiniaigiveniareaioriamongiaispecificigroupiofipersonsid
uringiaiparticulariperiod.iUsually,itheicasesiareipresumeditoihaveiaico
mmonicauseioritoibeirelateditoioneianotheriinisomeiway.
Frequencyi-iCORRECT ANSWERS-
Theiamountiorinumberiofioccurrencesiofianiattributeiorihealthioutcome
iamongiaipopulation.
PortaliofiEntryi-iCORRECT ANSWERS-
Aipathwayiintoitheihostithatigivesianiagentiaccessitoitissueithatiwilliall
owiititoimultiplyioriact.
Prevalencei-iCORRECT ANSWERS-
Theinumberioriproportionioficasesiorieventsioriattributesiamongiaigive
nipopulation.
Hosti-iCORRECT ANSWERS-
Aipersonioriotherilivingiorganismithatiisisusceptibleitoioriharborsianiinf
ectiousiagentiunderinaturaliconditions.
vendarsol
100% Correct And Verified Answers
2025
HowidoesitheiInstituteiofiMedicinei(IOM)idefinesitheimissioniofipublici
health?i-iCORRECT ANSWERS-
Asi"fulfillingisociety'siinterestiiniassuringiconditionsiiniwhichipeopleic
anibeihealthy".
Whatiareithei10iEssentialiPubliciHealthiServicesi(ES)?i-iCORRECT
ANSWERS-1.iMonitorihealth
2.iDiagnoseiandiinvestigate
3.iInform,ieducate,iandiempower
4.iMobilizeicommunityipartnerships
5.iDevelopipoliciesiandiplans
6.iEnforceilawsiandiregulations
7.iLinkipeopleitoineededipersonalihealthiservices
8.iAssureiaicompetentiworkforce
9.iEvaluate
10.iResearch
Whatiareithreeiforcesithatimayihelpishapeitheifutureiofitheienvironmen
talihealthiprofession?i-iCORRECT ANSWERS-
1.iClimateichangeiandiresultingiecosystemichangesiandinaturalidisast
ers
2.iPopulationigrowthianditheiglobaliriseiinistandardiofilivingiresultingii
nifasterideteriorationiofitheinaturalienvironment
3.iNovelioripharmaceutical-resistantipathogens
WhatidoesiARECistandifor?i-iCORRECT ANSWERS-
anticipation,irecognition,ievaluation,icontrol
Complianceiandienforcementiinterventionistrategiesicanibeidividediint
oiwhatitwoigroups?i-iCORRECT ANSWERS-
1.iThoseidesigneditoiachieveiimmediateion-siteicorrection.i
2.iThoseidesigneditoiachieveilong-termicompliance.
WhatiisiaiStandardiOperatingiProcedurei(SOP)?i-iCORRECT ANSWERS-
Aistandardioperationiprocedurei(SOP)iisiaiwritteniprocessithatiprovide
siconsistentiguidanceitoiemployeesiwithinianiorganizationiasitoihowith
vendarsol
,eyishouldiproperlyicompleteiaigivenitaskiiniaiuniformimanner.iItiprovid
esidetailedistepsiandidetailsitheitoolsinecessaryitoicompleteitheitask.
WhatiisiMalfeasance?i-iCORRECT ANSWERS-
Theidoingiofianiactithatiisiwrongfuliandithatiisiknownitoibeiwhollyiunau
thorizedibyitheiofficial.
WhatiisiMisfeasance?i-iCORRECT ANSWERS-
Theidoingiofianiauthorizediactiinianiunauthorizedimanner.
WhatiisiNonfeasance?i-iCORRECT ANSWERS-
Theifailureitoiperformianiofficialidutyiwithoutisufficientiexcuse.
Whatiareitheitwoimainitypesiofiepidemiologicalistudiesithaticanibeiuse
diinianiepidemiologicaliinvestigation?i-iCORRECT ANSWERS-
DescriptiveiandiAnalytical.
ActiveiImmunityi-iCORRECT ANSWERS-
Resultsiwheniexposureitoiaidiseaseiorganismitriggersitheiimmuneisyst
emitoiproduceiantibodiesitoithatidisease.iActiveiimmunityicanibeiacqui
redithroughinaturaliimmunityiorivaccine-inducediimmunity
PassiveiImmunityi-iCORRECT ANSWERS-
Wheniaipersoniisigiveniantibodiesitoiaidiseaseiratherithaniproducingith
emithroughihisioriheriowniimmuneisystem.
Agenti(biology/epi)i-iCORRECT ANSWERS-
Aifactori(e.g.,iaimicroorganismiorichemicalisubstance)ioriformiofienerg
yiwhoseipresence,iexcessiveipresence,ioriinitheicaseiofideficiencyidise
ases,irelativeiabsenceiisiessentialiforitheioccurrenceiofiaidiseaseiorioth
eriadverseihealthioutcome.
ModeiofiTransmissioni-iCORRECT ANSWERS-
Theimanneriiniwhichianiagentiisitransmittedifromiitsireservoiritoiaisusc
eptibleihost.
Carrieri-iCORRECT ANSWERS-
Aipersoniorianimalithatiharborsitheiinfectiousiagentiforiaidiseaseiandic
anitransmitiititoiothers,ibutidoesinotidemonstrateisignsiofitheidisease.i
Aicarriericanibeiasymptomatici(neveriindicateisignsiofitheidisease)ioric
anidisplayisignsiofitheidiseaseionlyiduringitheiincubationiperiod,iconva
lescence,ioripostconvalescence.iTheiperiodiofibeingiaicarriericanibeish
orti(aitransienticarrier)iorilongi(aichronicicarrier).
vendarsol
, Morbidityi-iCORRECT ANSWERS-
(disease)iAnyideparture,isubjectiveioriobjective,ifromiaistateiofiphysio
logicalioripsychologicalihealthiandiwell-being.
Mortalityi-iCORRECT ANSWERS-Death
DemographiciInformationi-iCORRECT ANSWERS-
Personalicharacteristicsiofiaipersoniorigroupi(e.g.,iage,isex,irace/ethni
city,iresidence,iandioccupation)idemographiciinformationiisiusediinide
scriptiveiepidemiologyitoicharacterizeipatientsioripopulations.
Pandemici-iCORRECT ANSWERS-
Aniepidemicioccurringioveriaiwidespreadiareai(multipleicountriesiorico
ntinents)iandiusuallyiaffectingiaisubstantialiproportioniofitheipopulati
on.
Endemici-iCORRECT ANSWERS-
Theiconstantipresenceiofianiagentiorihealthiconditioniwithiniaigivenige
ographiciareaioripopulation;icanialsoireferitoitheiusualiprevalenceiofia
niagentioricondition.
Epidemici-iCORRECT ANSWERS-
Theioccurrenceiofimoreicasesiofidisease,iinjury,ioriotherihealthiconditi
onithaniexpectediiniaigiveniareaioriamongiaispecificigroupiofipersonsid
uringiaiparticulariperiod.iUsually,itheicasesiareipresumeditoihaveiaico
mmonicauseioritoibeirelateditoioneianotheriinisomeiway.
Frequencyi-iCORRECT ANSWERS-
Theiamountiorinumberiofioccurrencesiofianiattributeiorihealthioutcome
iamongiaipopulation.
PortaliofiEntryi-iCORRECT ANSWERS-
Aipathwayiintoitheihostithatigivesianiagentiaccessitoitissueithatiwilliall
owiititoimultiplyioriact.
Prevalencei-iCORRECT ANSWERS-
Theinumberioriproportionioficasesiorieventsioriattributesiamongiaigive
nipopulation.
Hosti-iCORRECT ANSWERS-
Aipersonioriotherilivingiorganismithatiisisusceptibleitoioriharborsianiinf
ectiousiagentiunderinaturaliconditions.
vendarsol
