General microbiology

A. Bacteriological study B. Antibiotic prophylaxis
C. Isolation D. Dispensary observation E. Vaccination
11. During the repeated Widal’s agglutination test it was noticed that the ratio of antibody titers and O-antigens S.typhi in the patient’s serum had increased from 1:100 to 1:400. How would you interpret these results?
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 microbes
D. The patient previously had typhoid fever
E. The patient was previously vaccinated against typhoid fever
12. To conduct serum diagnostics of typhoid fever a test is carried out, when diagnosticums of three types of microorganisms are being added into different solutions of patient’s serum; then agglutinate formation is checked. Name the author of that test.
A. Widal B.Wassermann C. Ouchterlony
D. Wright E. Sachs-Witebsky
13. A 50-year-old patient with typhoid fever was treated with Levomycetin, the next day his condition became worse, temperature rised to 39,6⁰С. What caused worthening?
A. Reinfection B. Irresponsiveness of an agent to the levomycetin
C. Allergic reaction D. The effect of endotoxin agent
E. Secondary infection addition
14. A patient was hospitalized into the infectious diseases unit on the 11^th day since the disease onset and provisionally diagnosed with typhoid fever. What biological material should be collected from the patient for the analyzes at this stage?
A. Roseola secretion B. Blood serum C. Bile D. Feces E. Urine
15. A patient was brought into the infectional diseases hospital on the 8th day since the disease onset. The patient complains of headache, malaise, and weakness. A sample of blood was taken for the serological test. Widal agglutination test results with blood sample diluted 1:200 and typhoid fever O-diagnosticum were positive. What diagnosis can be made based on the results of this test?