Infectious Disease I

Question 1

Gram-positive cocci in clusters

Answer 1

Staphylococcus spp. (MRSA, MSSA)

Question 2

Gram-positive cocci in pairs or chains

Answer 2

Strep. pneumoniae, streptococcus spp., Enterococcus spp.

Question 3

Gram-positive rods

Answer 3

Listeria monocytogenes

Question 4

Gram-positive anaerobes

Answer 4

Peptostreptococcus, Actinomyces spp., Clostridium spp.

Question 5

Atypical organisms

Answer 5

Chlamydia spp., Legionella spp., Mycoplasma pneumoniae, Mycobacterium tuberculosis

Question 6

Gram-negative cocci

Answer 6

Neisseria spp.

Question 7

Gram-negative rods

Answer 7

Colonize the gut (“enteric”):
Proteus mirabilis, Escherichia coli, Klebsiella spp., Serratia spp., Enterobacter cloacae, Citrobacter spp.

Do not colonize the gut:
Pseudomonoas aeruginosa, Haemophilus influenzae, Providencia spp.

Question 8

Gram-negative coccobacilli

Answer 8

Acinetobacter baumannii, Bordetella pertussis, Moraxella catarrhalis

Question 9

Gram-negative anaerobes

Answer 9

Bacteroides fragilis, Prevotella spp.