Gordis Epidemiology 6th Edition Celentano Test Bank
v v v v v v
Chapter 01: Introduction
v v
Celentano:vGordisvEpidemiology,v6thvEditionv
TestvBank
MULTIPLEvCHOICE
1. Whichvofvthevfollowingvisvanvexamplevofvtertiaryvprevention?
a. Vaccinationvforvrotavirusvforvchildrenv youngervthanvthevagevofv1vyear
b. Surgicalvamputationvofvanvextremityvwithvosteosarcomav(bonevcancer)
c. Screeningvforvgestationalvdiabetesvafterv24vweeksvofvpregnancy
d. Sexualveducationvprogramvinvelementaryvschools
e. Increasingvtaxesvforvbuyingvcigarettesv
ANS:vB
Surgicalvamputationvofvanvextremityvwithvosteosarcomav(bonevcancer)visvanvexamplevinvwhichvw
henv av diseasev isv presentv thev treatmentv (amputation)v isv donev tov reducev thev impactv ofv diseasevbyv
preventingvthevtumorvfromvdissemination.vVaccinationvforvrotavirusvforvchildrenvyoungervthanvt
hevagevofv1vyear,vsexualveducationvprogramvinvelementaryvschools,vandvincreasingvtaxesvforvbuyi
ngvcigarettesvrepresentvexamplesvofvprimaryvprevention.vScreeningvforvgestationalvdiabetesvafter
v24vweeksvofvpregnancyvisvanvexamplevofvsecondaryvprevention.
2. ThisvhistoricvcharactervobservedNtU
haRtvS
chIilN
dbGeT
dvB
fe.
veCrvO
mMortalityvwasvmorevcommonvamongvw
omenvtreatedvbyvphysiciansvandvmedicalvstudentsvcomparedvwithvwomenvtreatedvbyvmidwive
s.vBasedvonvhisvobservations,vhevimplementedvavhandvwashvpolicyvthatvresultedvinvavdecreasevi
nvmortality.vNamevthevcharactervthatvwevarevtalkingvabout.
a. JohnvSnow
b. EdwardvJenner
c. D.A.vHenderson
d. LeonvGordis
e. IgnazvSemmelweisv
ANS:vE
IgnazvSemmelweisvidentifiedvthatvmedicalvstudentsvandvphysiciansvtransmittedvthevdiseasevbyvn
otvwashingvtheirvhandsvaftervexaminingvbodiesvatvautopsiesvandvconductingvmultiplevexaminati
onsvinvthevclinic.
3. ThanksvtovthevcontributionsvofvEdwardvJenner,vthevfollowingvdiseasevwasveradicatedvlatervb
yveffortsvorganizedvbyvD.A.vHenderson:
a. Cholera
b. Smallpox
c. Chickenpox
d. Polio
e. Zika
,ANS:vB
Smallpoxvwasveradicatedvinv1980.vEdwardvJennervvaccinatedvJamesvPhippsvinv1796vagainstvs
mallpox.vAlmostv200vyearsvlater,vthevWorldvHealthvOrganizationv(WHO)vcommissioned
D.A.vHendersonvtovleadvtheveffortsvtoveradicatevthevdisease.
4. Overvthevpastvcentury,vavmarkedvdeclinevinvthevmortalityvratesvofvmanyvinfectiousvdiseasesvh
asvbeenvobserved.vWhichvofvthevfollowingvisvthevmostvlikelyvreasonvforvthevobservedvdeclinevinv
mortalityvratesvfromvcommonvinfectiousvdiseases?
a. Developmentvofvpenicillin
b. Developmentvofvinsulin
c. Developmentvofvvaccines
d. Improvementvinvsocialvconditions
e. Worsevsanitationvandvunsafevwaterv
ANS:vD
Althoughvmedicalvtreatmentsvpotentiallyvhelpedvinvthevdecreasevofvinfectiousvdiseases,vtheva
dvancementvinvsocialvconditionsvplayedvavmajorvrole.vThesevimprovementsvincludevbettervsa
nitation,vsafevdisposalvofvwaste,vbettervnutrition,vandvimprovementvinvhousingvconditions.
,Chapter 02: The Dynamics of Disease Transmission
v v v v v v
Celentano:vGordisvEpidemiology,v6thvEditionv
MULTIPLEvCHOICE
1. Whichvtermvmostvaccuratelyvdescribesvthevfollowingvdefinition?v“Thevoccurrencevinvavcom
munityvorvregionvofvcasesvofvanvillness,vspecificvhealth-relatedvbehavior,vorvothervhealth-
relatedveventsvclearlyvinvexcessvofvnormalvexpectancy.”v[PortavM,ved.vAvDictionaryvofvE
pidemiology.vNewvYork:vOxfordvUniversityvPress;v2014.]
a. Endemic
b. Epidemic
c. Pandemic
d. Attackvrate
e. Incubationvperiodv
ANS:vB
Anvepidemicvisvthevoccurrencevofvhealth-
relatedveventsvinvavcommunityvorvregion,vinvclearvexcessvofvnormalvexpectation.vEndemicvisvnot
vtruevbecausevitvisvdefined vasvthevconstantvoccurrencevofvavdisease,vdisorder,vorvnoxiousvinfectio
usvagentvinvavgeographicvareavorvpopulationvgroup.vPandemicvisvnotvtruevbecausevitvisvdefinedvas
vanvepidemicvoccurringvoverva
NvRvIvGvB.C
veryvwidevarea,vcrossingvinternationUalvbSounNdarT ies,vandOusuallyvaffectingvavlargevnumbervof
people.vAttackvratevisvnotvtruevbecausevitvisvdefinedvasvnumbervofvpeoplevatvriskvinvwhomvavcer
tainvillnessvdevelopsvovervtotalvnumbervofvpeoplevatvrisk.vIncubationvperiodvisvnotvtruevbecaus
evitvisvthevintervalvfromvreceiptvofvinfectionvtovthevtimevofvonsetvofvclinicalvillnessv(thevonsetvofv
recognizablevsymptoms).
2. Whatvisvthevmostvaccuratevdefinitionvofvthevincubationvperiodv(ofvanvinfectiousvdisease)?
a. Thevtimevofvonsetvofvclinicalvillnessvorvthevonsetvofvrecognizablevsymptoms
b. Thevintervalvfromvreceiptvofvinfectionvtovthevtimevofvonsetvofvclinicalvillnessv(thevonsetvofvr
ecognizablevsymptoms)
c. Thevtimevofvinvasionvbyvanvinfectiousvagent
d. Thevtimevbetweenvinitiationvofvinfectionvandvfirstvsheddingvorvexcretionvofvthevagent
e. Thevperiodvbetweenvexposurevandvthevonsetvofvinfectiousnessv
ANS:vB
Thevincubationvperiodvisvdefinedvasvthevintervalvfromvreceiptvofvinfectionvtovthevtimevofvonsetvof
vclinical villnessv(thevonset vofvrecognizablevsymptoms);vinvothervwords,vthevtimevbetweenvthevmo
mentvofvdevelopingvsymptomsvandvthevmomentvofvinvasionvbyvanvinfectiousvagent.v“Thevtimevo
fvonsetvofvclinicalvillnessvorvthevonsetvofvrecognizablevsymptoms”visvnotvtruevasvitvcorrespondsvt
ov“timevofvonset.”v“Thevtimevofvinvasionvbyvanvinfectiousvagent”visvnotvtruevasvitvcorrespondsvtov
“timevofvinfection.”v“Thevtimevbetweenvinitiationvofvinfectionvandvfirstvsheddingvorvexcretionvo
fvthevagent”vandv“Thevperiodvbetweenvexposurevandvthevonsetvofvinfectiousness”varevnotvtruevasv
theyvcorrespondvtovthevlatentvperiod.v(Thevlatentvperiodvis
, focusingvonvthevonsetvofvinfectiousness,vbutvthevincubationvperiodvisvfocusingvonvthevonsetvofvt
hevsymptom.)
3. TherevwasvavfoodvpoisoningvoutbreakvonvAprilv1,v2018,vatvthevCityvZvFoodvSafetyvConferenc
e.vTherevwerev1,000vpeoplevregisteredvforvthevconferencevwithvluncheon,v100vvolunteersvtovhost
vattendees, vandv50vpeoplevwhovservedvthevluncheonvduringvthevconference. vExceptvforv50vpeopl
evwhovservedvthevfood,vallvofvthevparticipantsvandvvolunteersvatevthevfoodvfromvthevluncheonvatvt
hevconferencevonvAprilv1,v2018.vBasedvonlyvonvthevinformationvgivenvinvthisvquestion,vhowvman
yvpeoplevarevatvriskvinvthisvfoodvpoisoningvoutbreak?
a.v1,000
b.v1,100
c.v1,150
d.v150
e.v50vAN
S:vB
Peoplevatvriskvinvthisvoutbreakvarevpeoplevwhovwerevexposedvtovthevfoodvatvthevconference.vEve
nvthoughv1,150vpeoplevwerevatvthevconference,v50vpeoplevwhovservedvthevfoodvdidvnotveatvthevfo
od.vThereforevwevhavevtovexcludevthosev50vpeople.
4. TherevwasvavfoodvpoisoningvoutbreakvonvAprilv1,v2018,vatvthevCityvZvFoodvSafetyvConfere
nce.vTherevwerev1,000vpeoplevregisteredvforvthevconferencevwithvluncheon,v100vvolunteersvto
vhostvattendees,vandv50vpeoplevwhovservedvthevluncheonvduringvthevconference.
Exceptvforv50vpeoplevwhovservedvNthUevR odI,vN
foS alG
lvoTfvB
th.
evC
paOrtM
icipantsvandvvolunteersvatevthevfoodvfro
mvthevluncheonvatvthevconferencevonvAprilv1,v2018.vAftervanvinitialvoutbreakvofvfoodvpoisoningv
isvreported,vanvepidemiologistvsendsvsurveysvtovallvpeoplevatvriskvtovinvestigatevthe
cause.vHowever,vonlyv900vpeoplevamongvthosevatvriskvanswervthevsurvey.vAftervanalysisvofv900
vsurveyvresults,vthevepidemiologistvconcludesvthatvthevmost vsuspectedvfoodsvinvthevoutbreakvare
vpepperonivpizzavandvmeatballvspaghetti.vWhat visvthevoverall vattackvratevforvthosevwhovatevmeat
ballvspaghetti?vUsevthevfollowingvtablevtovanswervthevquestion.
SummaryvofvSurveyvResponses
Numbervofvpeoplevwhovdevel Numbervofvpeoplevwhovatevthev
opedvthevcasevdefinitionvsymp food
toms
Pepperonivpizzavonly 113 275
Meatballvspaghettivonly 62 375
Bothvpepperonivpizzavandv 57 150
meatballvspaghetti
Neithervofvpepperonivpizzavorv 10 100
meatballvspaghetti
a.v41%
b.v38%
c.v27%
v v v v v v
Chapter 01: Introduction
v v
Celentano:vGordisvEpidemiology,v6thvEditionv
TestvBank
MULTIPLEvCHOICE
1. Whichvofvthevfollowingvisvanvexamplevofvtertiaryvprevention?
a. Vaccinationvforvrotavirusvforvchildrenv youngervthanvthevagevofv1vyear
b. Surgicalvamputationvofvanvextremityvwithvosteosarcomav(bonevcancer)
c. Screeningvforvgestationalvdiabetesvafterv24vweeksvofvpregnancy
d. Sexualveducationvprogramvinvelementaryvschools
e. Increasingvtaxesvforvbuyingvcigarettesv
ANS:vB
Surgicalvamputationvofvanvextremityvwithvosteosarcomav(bonevcancer)visvanvexamplevinvwhichvw
henv av diseasev isv presentv thev treatmentv (amputation)v isv donev tov reducev thev impactv ofv diseasevbyv
preventingvthevtumorvfromvdissemination.vVaccinationvforvrotavirusvforvchildrenvyoungervthanvt
hevagevofv1vyear,vsexualveducationvprogramvinvelementaryvschools,vandvincreasingvtaxesvforvbuyi
ngvcigarettesvrepresentvexamplesvofvprimaryvprevention.vScreeningvforvgestationalvdiabetesvafter
v24vweeksvofvpregnancyvisvanvexamplevofvsecondaryvprevention.
2. ThisvhistoricvcharactervobservedNtU
haRtvS
chIilN
dbGeT
dvB
fe.
veCrvO
mMortalityvwasvmorevcommonvamongvw
omenvtreatedvbyvphysiciansvandvmedicalvstudentsvcomparedvwithvwomenvtreatedvbyvmidwive
s.vBasedvonvhisvobservations,vhevimplementedvavhandvwashvpolicyvthatvresultedvinvavdecreasevi
nvmortality.vNamevthevcharactervthatvwevarevtalkingvabout.
a. JohnvSnow
b. EdwardvJenner
c. D.A.vHenderson
d. LeonvGordis
e. IgnazvSemmelweisv
ANS:vE
IgnazvSemmelweisvidentifiedvthatvmedicalvstudentsvandvphysiciansvtransmittedvthevdiseasevbyvn
otvwashingvtheirvhandsvaftervexaminingvbodiesvatvautopsiesvandvconductingvmultiplevexaminati
onsvinvthevclinic.
3. ThanksvtovthevcontributionsvofvEdwardvJenner,vthevfollowingvdiseasevwasveradicatedvlatervb
yveffortsvorganizedvbyvD.A.vHenderson:
a. Cholera
b. Smallpox
c. Chickenpox
d. Polio
e. Zika
,ANS:vB
Smallpoxvwasveradicatedvinv1980.vEdwardvJennervvaccinatedvJamesvPhippsvinv1796vagainstvs
mallpox.vAlmostv200vyearsvlater,vthevWorldvHealthvOrganizationv(WHO)vcommissioned
D.A.vHendersonvtovleadvtheveffortsvtoveradicatevthevdisease.
4. Overvthevpastvcentury,vavmarkedvdeclinevinvthevmortalityvratesvofvmanyvinfectiousvdiseasesvh
asvbeenvobserved.vWhichvofvthevfollowingvisvthevmostvlikelyvreasonvforvthevobservedvdeclinevinv
mortalityvratesvfromvcommonvinfectiousvdiseases?
a. Developmentvofvpenicillin
b. Developmentvofvinsulin
c. Developmentvofvvaccines
d. Improvementvinvsocialvconditions
e. Worsevsanitationvandvunsafevwaterv
ANS:vD
Althoughvmedicalvtreatmentsvpotentiallyvhelpedvinvthevdecreasevofvinfectiousvdiseases,vtheva
dvancementvinvsocialvconditionsvplayedvavmajorvrole.vThesevimprovementsvincludevbettervsa
nitation,vsafevdisposalvofvwaste,vbettervnutrition,vandvimprovementvinvhousingvconditions.
,Chapter 02: The Dynamics of Disease Transmission
v v v v v v
Celentano:vGordisvEpidemiology,v6thvEditionv
MULTIPLEvCHOICE
1. Whichvtermvmostvaccuratelyvdescribesvthevfollowingvdefinition?v“Thevoccurrencevinvavcom
munityvorvregionvofvcasesvofvanvillness,vspecificvhealth-relatedvbehavior,vorvothervhealth-
relatedveventsvclearlyvinvexcessvofvnormalvexpectancy.”v[PortavM,ved.vAvDictionaryvofvE
pidemiology.vNewvYork:vOxfordvUniversityvPress;v2014.]
a. Endemic
b. Epidemic
c. Pandemic
d. Attackvrate
e. Incubationvperiodv
ANS:vB
Anvepidemicvisvthevoccurrencevofvhealth-
relatedveventsvinvavcommunityvorvregion,vinvclearvexcessvofvnormalvexpectation.vEndemicvisvnot
vtruevbecausevitvisvdefined vasvthevconstantvoccurrencevofvavdisease,vdisorder,vorvnoxiousvinfectio
usvagentvinvavgeographicvareavorvpopulationvgroup.vPandemicvisvnotvtruevbecausevitvisvdefinedvas
vanvepidemicvoccurringvoverva
NvRvIvGvB.C
veryvwidevarea,vcrossingvinternationUalvbSounNdarT ies,vandOusuallyvaffectingvavlargevnumbervof
people.vAttackvratevisvnotvtruevbecausevitvisvdefinedvasvnumbervofvpeoplevatvriskvinvwhomvavcer
tainvillnessvdevelopsvovervtotalvnumbervofvpeoplevatvrisk.vIncubationvperiodvisvnotvtruevbecaus
evitvisvthevintervalvfromvreceiptvofvinfectionvtovthevtimevofvonsetvofvclinicalvillnessv(thevonsetvofv
recognizablevsymptoms).
2. Whatvisvthevmostvaccuratevdefinitionvofvthevincubationvperiodv(ofvanvinfectiousvdisease)?
a. Thevtimevofvonsetvofvclinicalvillnessvorvthevonsetvofvrecognizablevsymptoms
b. Thevintervalvfromvreceiptvofvinfectionvtovthevtimevofvonsetvofvclinicalvillnessv(thevonsetvofvr
ecognizablevsymptoms)
c. Thevtimevofvinvasionvbyvanvinfectiousvagent
d. Thevtimevbetweenvinitiationvofvinfectionvandvfirstvsheddingvorvexcretionvofvthevagent
e. Thevperiodvbetweenvexposurevandvthevonsetvofvinfectiousnessv
ANS:vB
Thevincubationvperiodvisvdefinedvasvthevintervalvfromvreceiptvofvinfectionvtovthevtimevofvonsetvof
vclinical villnessv(thevonset vofvrecognizablevsymptoms);vinvothervwords,vthevtimevbetweenvthevmo
mentvofvdevelopingvsymptomsvandvthevmomentvofvinvasionvbyvanvinfectiousvagent.v“Thevtimevo
fvonsetvofvclinicalvillnessvorvthevonsetvofvrecognizablevsymptoms”visvnotvtruevasvitvcorrespondsvt
ov“timevofvonset.”v“Thevtimevofvinvasionvbyvanvinfectiousvagent”visvnotvtruevasvitvcorrespondsvtov
“timevofvinfection.”v“Thevtimevbetweenvinitiationvofvinfectionvandvfirstvsheddingvorvexcretionvo
fvthevagent”vandv“Thevperiodvbetweenvexposurevandvthevonsetvofvinfectiousness”varevnotvtruevasv
theyvcorrespondvtovthevlatentvperiod.v(Thevlatentvperiodvis
, focusingvonvthevonsetvofvinfectiousness,vbutvthevincubationvperiodvisvfocusingvonvthevonsetvofvt
hevsymptom.)
3. TherevwasvavfoodvpoisoningvoutbreakvonvAprilv1,v2018,vatvthevCityvZvFoodvSafetyvConferenc
e.vTherevwerev1,000vpeoplevregisteredvforvthevconferencevwithvluncheon,v100vvolunteersvtovhost
vattendees, vandv50vpeoplevwhovservedvthevluncheonvduringvthevconference. vExceptvforv50vpeopl
evwhovservedvthevfood,vallvofvthevparticipantsvandvvolunteersvatevthevfoodvfromvthevluncheonvatvt
hevconferencevonvAprilv1,v2018.vBasedvonlyvonvthevinformationvgivenvinvthisvquestion,vhowvman
yvpeoplevarevatvriskvinvthisvfoodvpoisoningvoutbreak?
a.v1,000
b.v1,100
c.v1,150
d.v150
e.v50vAN
S:vB
Peoplevatvriskvinvthisvoutbreakvarevpeoplevwhovwerevexposedvtovthevfoodvatvthevconference.vEve
nvthoughv1,150vpeoplevwerevatvthevconference,v50vpeoplevwhovservedvthevfoodvdidvnotveatvthevfo
od.vThereforevwevhavevtovexcludevthosev50vpeople.
4. TherevwasvavfoodvpoisoningvoutbreakvonvAprilv1,v2018,vatvthevCityvZvFoodvSafetyvConfere
nce.vTherevwerev1,000vpeoplevregisteredvforvthevconferencevwithvluncheon,v100vvolunteersvto
vhostvattendees,vandv50vpeoplevwhovservedvthevluncheonvduringvthevconference.
Exceptvforv50vpeoplevwhovservedvNthUevR odI,vN
foS alG
lvoTfvB
th.
evC
paOrtM
icipantsvandvvolunteersvatevthevfoodvfro
mvthevluncheonvatvthevconferencevonvAprilv1,v2018.vAftervanvinitialvoutbreakvofvfoodvpoisoningv
isvreported,vanvepidemiologistvsendsvsurveysvtovallvpeoplevatvriskvtovinvestigatevthe
cause.vHowever,vonlyv900vpeoplevamongvthosevatvriskvanswervthevsurvey.vAftervanalysisvofv900
vsurveyvresults,vthevepidemiologistvconcludesvthatvthevmost vsuspectedvfoodsvinvthevoutbreakvare
vpepperonivpizzavandvmeatballvspaghetti.vWhat visvthevoverall vattackvratevforvthosevwhovatevmeat
ballvspaghetti?vUsevthevfollowingvtablevtovanswervthevquestion.
SummaryvofvSurveyvResponses
Numbervofvpeoplevwhovdevel Numbervofvpeoplevwhovatevthev
opedvthevcasevdefinitionvsymp food
toms
Pepperonivpizzavonly 113 275
Meatballvspaghettivonly 62 375
Bothvpepperonivpizzavandv 57 150
meatballvspaghetti
Neithervofvpepperonivpizzavorv 10 100
meatballvspaghetti
a.v41%
b.v38%
c.v27%
