KROK 1 2007 – Question 66 · KROK (Medicine) · Microbiology, Virology, and Immunology
Reaction of passive hemagglutination conducted with erythrocytic typhoid Vi-diagnosticum helped to reveal some antibodies in the dilution of the patient’s serum at a ratio of 1:80 that exceeds the diagnostic titer. Such result witnesses of:
- A. Reconvalescence of a patient ill with typhoid fever
- B. Typhoid fever recurrence
- C. Being ill with acute typhoid fever
- D. Being a potential carrier of typhoid bacilli
- E. Incubation period of typhoid fever
Hint
Antibodies to the capsular Vi antigen are not typical of acute illness; think about what a prolonged presence of the organism in the body does to them.
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