Bank of Krok testing to module N1

A The patient has typhoid fever
B The patient is an acute carrier of typhoid microbes
C The patient is a chronic carrier of typhoid microbs
D The patient previously had typhoid fever
E The patient was previously vaccinated against typhoid fever
Salmonella causing food poisoning infections

92. A 12-year-old boy with food poisoning suspected was hospitalized. Feces culture on Endo medium revealed numerous colorless colonies. Name the microorganism, which can be excluded from the number of possible causative agents of this disease.

A. Pseudomonas aeruginosa.
B. *Salmonella enteritidis.
C. Proteus vulgaris.
D.Escherichia coli.
E. Yersinia enterocolitica.

*03, 07* 153. B-12 During the bacteriological examination of gastric washings of a patient with food poisoning pure culture of bacteria with such properties was isolated: Gram-negative motile rods which form colorless colonies on Endo medium. Which microorganism species is the most likely to be the cause of the disease?

A. *Salmonella.
B. Shigella.
C. Yersinia.
D. Escherichia.
E. Citrobacter.

*107. There is registered an outbreak of food poisoning connected with eating confectionery products, which were kept at room temperature and for preparation of which duck's eggs were used. What microorganisms could have caused this disease?

A. Vibrio cholerae.
B. E.coli.
C. Staphylococci.
D. Legionella.
E. *Salmonella.

*A food poisoning infection appeared in some persons which had anniversary celebration. A cream for cake have been prepared from duck’s eggs. Which the most probable genus do bacteria causing infection belong to?

Clostridium
Shigella
*Salmonella
Yersinia
Corynebacterium

170. Identification of food toxical infection causative agent has shown that according to biochemical properties it belongs to Salmonella genus. What property of the causative agent testifies its specific belonging?

A. Pathogenicity for laboratory animals.
B. Phagotype.
C. Culture properties.
D. *Antigenic structure.
E. Morphologic and staining properties.
*An outbreak of enteric infection arose in hospital department that was not connected with quality of provided food. Infection was resistant to antibiotic therapy. Which causative agent of hospital infection is the most probable?

1. 
   *Salmonella
   
2. 
   Staphylococcus
   
3. 
   Streptococcus
   
4. 
   Blue-pus rod (Pseudomonas)
   
5. 
   Proteus
   

Shigella spp.

86.*2013* A patient complained of nausea, liquid blood-streaked stool with mucus, fever, general weakness. He was hospitalized to the infectious department of a hospital. A doctor suspected shigellosis. What method of laboratory diagnostics should be administered to confirm this diagnosis?

A. *Bacteriological.
B. Serological.
C. allergic.
D. Microscopic.
E. biological

*A patient with diarrhea and subfebrile temperature was previously diagnosed as suffering from dysentery. Isolated culture fermented glucose and mannitol to acid and gas, slowly broke down lactose and protein with indole production. Which from causative agent of dysentery is characterized with these properties?

S.flexneri
S.dysenteriae
S.boydii
*S.sonnei
P.shigelloides

89. Pure culture of bacteria isolated from a patient with symptoms of colitis was identified as Shigella genus according to morphological, cultural, and biochemical properties. Which test should be used for serological identification of this culture?

A. Inhibition of hemagglutination.
B. Complement fixation test.
C. Indirect hemagglutination.
D. Precipitation.
E. *Agglutination with diagnostic serums.

16. Stool culture revealed S. zonnei. What additional researches should be carried out to determine the source of infection?

A. Drugs susceptibility test.
B. *Phage typing test.
C. Precipitation reaction.
D. Complement-fixing reaction.
E. Neutralization reaction.

30. Feces culture of a patient with typical clinical picture of shigellosis did not reveal shigella due to early treatment with antibiotics. But antishigella antibodies titer in PHAT in pair serums increased by four times. What does it mean?

A. Vaccinal reaction.
B. Excludes shigellosis diagnosis.
C. The patient was ill with shigellosis before.
D.Nonspecific reaction.
E. *Confirms shigellosis diagnosis.

69. Feces bacteriological examination of a patient with enteric infection revealed Shigella sonnei. Choose the serological reaction, which was used for the identification of the obtained pure culture.

A. Complement fixation test.
B. Precipitation.
C. *Agglutination.
D. Neutralization.
E. Lysis test.

*07* b-12 For retrospective diagnosis of past bacterial dysentery a serology of blood serum was administered to reveal antibody titer to Shigella. Which from listed tests should be used for this purpose?

*Passive hemagglutination
Precipitation
Complement fixation test
Hemolysis
Bacteriolysis

* During studying of isolated from a patient Shigella culture presence of exotoxin has been indicated. Which species of Shigella is this sign typical for?

S.flexneri
*S.dysenteriae
S.boydii
S.sonnei

*An outbreak of dysentery was registered into kindergarten in the town M.. Which drug should be used for specific prevention in children?

Antibiotics
*Bacteriophage
Vaccines
Probiotics
Vitamins
b-12 A patient recovered from Sonne dysentery and was once more infected with the same causative agent. What is such infection form called?