Exam #2

Question 1

Listeria

Answer 1

G+B
Milk, cheese, poultry, raw veggies
Exotoxin listeriolysin O
CAT+ (unlike Gp. B Strep.)

Neonate disease: early onset (stillbirth, premature birth, abortion) and late onset (meningitis or meningoencephalitis with septicemia)

Adult disease: asymptomatic or “flu-like”, meningitis, bacteremia

Question 2

Erysipelothrix

Answer 2

G+B
Swine and turkeys

Neuramidase (attachment and penetration - epithelial cells)
Capsule

Erypsipeloid
Septicemia

Question 3

Corynebacterium

Answer 3

G+B
Metachromatic granules
plants, animals, humans (upper resp., GI, UG)
Opportunistic

C. diphtheriae
C. jeikeium
C. urealyticum
C. pseudotuberculosis and C. ulcerans

Question 4

Mycobacterium

Answer 4

Acid-fast bacilli
Cell walls rich in lipids - mycolic acids
clumping, antigenicity, resistance to detergents and antibiotics

Inhalation of infectious aerosols

Question 5

Neisseria

Answer 5

G-DC