GRAM (+) BACILLI - NONSPOREFORMERS

Question 1

Kleb’s Loeffler’s Bacillus
Highly pleomorphic; ferments dextrose and maltose
forms X,V,Y and L formation resembles “Chinese Letter or Picket Fence”, palisade

Answer 1

Corynebacterium diphtheriae

Question 2

Virulence factor: diphtheria toxin (exotoxin A, B)
DNASE (+)
NM, NS, NE
Catalase (+); Urease (+)
Metachromatic granules

Answer 2

Corynebacterium diphtheriae

Question 3

Shorter with less metachromatic granules

Answer 3

Diphtheroids

Question 4

Associated with diphtheria-like sore throat
Ingestion of contaminated milk

Answer 4

Corynebacterium ulcerans

Question 5

Causes Mastitis in cattles

Answer 5

Corynebacterium ulcerans

Question 6

Hoffman’s Bacillus
NO3 (+)

Answer 6

C. pseudodiphtheriticum

Question 7

diphtheroid prosthetic valve endocarditis
associated w/ multiple antibiotic resistance

Answer 7

C. jeikeium

Question 8

Agent of erythrasma
Coral red fluorescence
found in pubic area, anxillary

Answer 8

C. minutissimum : superficial infections

Question 9

Associated with horses
Also known as Corynebacterium ovis

Answer 9

C. pseudotuberculosis

Question 10

Veterarnian Pathogen
Resistance to salting and pickling

Answer 10

Erysipelothrix rhusiopathiae

Question 11

Major reservoir: domestic swine

Answer 11

Erysipelothrix rhusiopathiae

Question 12

Known organism: Rhodococcus equi
Contaminated food cabbage, coleslaw, fruits, dairy
confused with Group B streptococci

Answer 12

Listeria monocytogenes

Question 13

Doderlein Bacillus
Culture
Catalase (-); pleomorphic, NM, microaerophilic
H2S (-)

Answer 13

Lactobacillus acidophilus