KROK 1 2008 – Question 51 · KROK (Medicine) · Microbiology, Virology, and Immunology
A patient with clinical signs of encephalitis was delivered to the infectious diseases hospital. Anamnesis registers a tick bite. Hemagglutination-inhibition reaction helped to reveal antibodies to the causative agent of tick-borne encephalitis in the dilution 1:20 which is not diagnostic. What actions should the doctor take after he had got such result?
- A. To repeat examination with another diagnosticum
- B. To deny diagnosis of tick-borne encephalitis
- C. To examine the same serum
- D. To repeat the examination with serum taken 10 days later
- E. To apply more sensitive reaction
Hint
Consider that one low antibody titre cannot separate past contact from current infection; what is needed is evidence of a changing titre over the course of the illness.
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