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WorksheetsEnteric Fever Quiz
Total questions: 19
Worksheet time: 10mins
Most common organism causing enteric fever is
Salmonella typhi
Salmonella paratyphi A
Escherichia coli
Shigella dysenteriae
Enteric fever is transmitted mainly by
Respiratory droplets
Feco-oral route
Vector bite
Sexual contact
Virulence factor important in Salmonella typhi is
Exotoxin A
Vi capsular antigen
Protein A
Coagulase
Widal test detects antibodies against
S. typhi Vi only
S. typhi O and H antigens
Mycobacterial antigens
Viral antigens
O antigen in Widal test represents
Flagellar antigen
Somatic antigen
Capsular antigen
Exotoxin
H antigen in Widal test represents
Somatic antigen
Flagellar antigen
Capsular antigen
LPS
Most useful specimen for culture in first week of enteric fever is
Stool
Blood
Urine
Bone marrow
Most useful specimen for culture in second week of enteric fever is
Blood
Stool
CSF
Bile
Most sensitive culture method for enteric fever is
Blood culture
Stool culture
Urine culture
Bone marrow culture
Pathogenesis of enteric fever involves initial invasion through
Peyer’s patches
Colon crypts
Stomach mucosa
Liver only
Characteristic intestinal lesion in enteric fever is
Transverse ulcers
Longitudinal ulcers
Punched-out ulcers
Skip lesions
Typhoid carrier state is commonly due to persistence in
Appendix
Gall bladder
Lungs
Bone marrow
Widal test is usually positive after
Day 1
Day 3
1st week end
2nd week
Common method for serology of enteric fever is
Coagulase test
Widal test
Catalase test
Oxidase test
Prophylaxis for enteric fever includes
BCG vaccine
Typhoid vaccination and sanitation
MMR vaccine
Rabies vaccine
Typhoid vaccine used orally is
Vi polysaccharide
Ty21a live oral vaccine
Killed whole cell vaccine
Toxoid
Fever of unknown origin (FUO) is defined as fever for more than
3 days
7 days
2 weeks
3 weeks
FUO temperature criterion is
>37°C
>38.3°C
>39°C
>40°C
Common causes of FUO include all EXCEPT
Infections
Malignancy
Autoimmune diseases
Vitamin deficiency
