Bacillus anthracis

119. During a biological test in touch smears from the organs of an animal streptobacteria surrounded with a capsule were revealed. It gives the basis to diagnose:

A. Tularemia.

B.Anthrax.

C.Plague.

D. Brucellosis.

E.Croupous pneumonia.

* From horse carcass Gram-positive, capsulated, in size 8x1.5 µm, arranged in chains bacteria have been isolated. Which microorganism is it?

Causative agent of anthrax

Causative agent of foot-and-mouth disease.

Streptococcus

Causative agent of hepatitis A.

Causative agent of tetanus.

*00* 98. A 34-year-old patient complained of carbuncle on his face. Examination revealed a painless thin edema of subcutaneous fatty tissue with a black eschar in the center, and vesicular eruption on the periphery. Microbiologic examination revealed nonmotile capsule-forming streptobacilli. What microorganisms are the causative agents of this disease?

A. Bacillus anthracis.

B. Staphylococcus aureus.

C. Bacillus anthracoides.

Bacillus subtilis.

Bacillus megaterium.

* During microscopy of cattle-breeder’s eschar (scab) with suspicious anthrax typical Gram-positive rods surrounded with capsule have been revealed, that at cultivation onto nutrient media have formed colonies with “lion mane” appearance. Which drug should be used for prevention of anthrax in contact persons?

Vaccine STI

Vaccine STI-1

Antitetanus serum

Sixanatoxin (Sixtoxoid)

Anti-anthrax gamma-globulin

*03*05*08* 39.The territory of the old burial ground of cattle (for animal refuse), that has not been used for over 50 years, is planned for house building. But soil investigation has shown the presence of viable spores of an especially dangerous disease causative agent. Name the microorganism which could have been preserved in soil for such a long time.

A. Yersinia pestis.

B.Francisella tularensis.

C.Brucella abortus.

D. Bacillus anthracis.

E.Mycobacterium bovis.

65. A man referred to the reception ward of an infectious disease hospital, having received by mail an envelope with suspicious powder. The man was isolated, and the powder was sent to the laboratory for detecting the presence of anthrax causative agent's spores. Which is the fastest method of detecting these microorganisms?

A. Isolation of pure culture.

B. Complement fixation test.

Precipitation in gel.

Immunofluorescence test.

E. Neutralization test.

*00* 90. An extract of cattle-breading raw material was delivered to a laboratory from the area, where cases of anthrax among animals were noted. What serological reaction should be used for detecting anthrax causative agent antigens in the investigated specimen?

A. Termoprecipitation.

B. Complement fixation test.

C. Indirect hemagglutination.

D. Radioimmunoassay.

E. Precipitation in agar.

106. In a laboratory for the examination of animal skins the precipitation test is used (Askoly test). The resultis: in some minutes after adding of the immune serum with skin extract an albescent ring formed. What does this result indicate?

A. Presence of bacillus anthracis antigens.

B. Presence of Clostridium perfringens toxin.

C. Presence of brucellosis causative agent.

D. Presence of escherichia surface antigen.

E. Presence of salmonella Vi-antigen.

156. To check cattle-breeding raw material (leather, wool) for the presence of anthrax agent soluble thermostable antigen in water-salt extract from raw material is prepared. What reaction may be used for this purpose?

A. Neutralization.

B. Precipitation in agar.

C. Agglutination.

D. Indirect hemagglutination.

E. Ring-precipitation.