BCSE BCSE - Basic and Clinical Sciences Examination Veterinary Microbiology and Infectious Diseases Questions and Answers

Question 1

Which bacterial pathogen is the most common cause of leptospirosis in dogs in the United States?

Accepted Answer

Leptospira interrogans serovars Canicola and Icterohaemorrhagiae

Answer

Brucella canis

Answer

Borrelia burgdorferi

Answer

Ehrlichia canis

Question 2

Parvovirus type 2 in dogs primarily damages which tissue to cause hemorrhagic enteritis?

Accepted Answer

Intestinal crypt epithelium

Answer

Colonic goblet cells

Answer

Gastric parietal cells

Answer

Duodenal Brunner's glands

Question 3

Which organism causes 'Potomac horse fever' (equine monocytic ehrlichiosis) in the United States?

Accepted Answer

Neorickettsia risticii

Answer

Anaplasma phagocytophilum

Answer

Ehrlichia ruminantium

Answer

Rickettsia rickettsii

Question 4

The Gram stain appearance of Clostridium perfringens from a culture is best described as:

Accepted Answer

Large Gram-positive rods with subterminal spores

Answer

Gram-negative diplococci

Answer

Gram-positive cocci in clusters

Answer

Slender Gram-negative rods with polar flagella

Question 5

Which test is considered the 'gold standard' for diagnosis of Johne's disease (paratuberculosis) in cattle?

Accepted Answer

Fecal culture for Mycobacterium avium subsp. paratuberculosis

Answer

ELISA serology

Answer

Intradermal Johnin test

Answer

Complete blood count

Question 6

Feline infectious peritonitis (FIP) is caused by a mutated form of which virus?

Accepted Answer

Feline enteric coronavirus

Answer

Feline herpesvirus-1

Answer

Feline calicivirus

Answer

Feline leukemia virus