micro 3

Question 1

Streptococcus agalactiae (group B streptococci)

Answer 1

colonizes vagina; causes pneumonia, meningitis, and sepsis, mainly in babies

Question 2

Streptococcus bovis

Answer 2

Gram ⊕ cocci, colonizes the gut. S gallolyticus (S bovis biotype 1) can cause bacteremia and subacute endocarditis and is associated with colon cancer.
Bovis in the blood = cancer in the colon.

Question 3

entrococci

Answer 3

Gram ⊕ cocci. Enterococci (E faecalis and E faecium) are normal colonic flora that are penicillin G resistant and cause UTI, biliary tract infections, and subacute endocarditis (following GI/GU procedures). Catalase ⊝, PYR ⊕, variable hemolysis.
VRE (vancomycin-resistant enterococci) are an important cause of nosocomial infection

Question 4

Bacillus anthracis

Answer 4

Cutaneous anthrax

Cutaneous, the most common form (95%), causes a localized, inflammatory, black, necrotic lesion