Fastidious Gram Negatives

Question 1

Bartonella causative agent

Answer 1

Cat Scratch disease

Question 2

Bordetella pertussis causative agent

Answer 2

Whooping cough

Question 3

Bordetella pertussis media

Answer 3

Bordet gengou

Regan Lowe

Question 4

Bordetella pertussis morphology

Answer 4

mercury droplet colonies

Question 5

Capnocytophage morphology

Answer 5

finger like projections, looks like thin film around colony

Question 6

Francisella tularensis

Answer 6

Rabbit fever/Deer Fly fever

buttery colonies

Question 7

Pasteurella multicida

Answer 7

oral cavity of health dogs/cats

looks and smells like Haemophilus

Question 8

Streptobacillus moniliformis

Answer 8

Rat bite/Haverhill fever

fried egg colony

Question 9

Factor X

Answer 9

hemin

Question 10

Factor V

Answer 10

nicotinamide adenine dinucleotide (NAD)

Question 11

Haemophilus ducreyi

Answer 11

soft chancroid
school of fish arrangement
requires factor X

Question 12

Haemophilus influenzae

Answer 12

requires factor V and X
catalase (+)
oxidase (+)

Question 13

Haemophilus parainfluenzae

Answer 13

requires factor V

Question 14

Aggregatibacter aphrophilus

Answer 14

most common isolate causing endocarditis

requires factor V

Question 15

Aggregatibacter actinomycetomcomitans

Answer 15

major cause of periodontal disease
looks like a dot dash
4-6 pointed star 
catalase (+)
nitrate (+)

Question 16

Cardiobacterium hominis

Answer 16

GNR arranged in rosettes from blood cultures, may retain crystal violet at ends
pitting of agar, glistening, opaque
oxidase (+)
indole (+)

Question 17

Eikenella corrodens

Answer 17

smells like bleach
oxidase (+)
nitrate (+)

Question 18

Kingella kingae

Answer 18

oxidase (+)

spreading corroding colonies