(Part 2) 2.2.1 Streptococcus spp. characteristics

Question 1

Classification of Strep that is based on serologic grouping of cell wall polysaccharide

Answer 1

Lancefield

Question 2

Classification of strep that is based on hemolytic pattern

Answer 2

Brown’s classification

Question 3

Group A?

Answer 3

S. pyogenes

Question 4

Group C, G?

Answer 4

S. dysagalactiae subsp. equisimilis

Question 5

Group F?

Answer 5

S. anginosus

Question 6

Group B?

Answer 6

S. agalactiae

Question 7

Enterococci?

Answer 7

E. faecalis, E. faecium

Question 8

Viridans?

Answer 8

S. mutans, S. sanguinis

Question 9

Most common bacterial neonatal infection

Answer 9

S. agalactiae

Question 10

Causes Strep throat (Acute pharyngitis) bullous impetigo, Necrotizing fasciitis, Scarlet fever and Poststreptococcal diseases

Answer 10

S. pyogenes

Question 11

Can cause transient vaginal carriage in (10-30%) female

Answer 11

S. agalactiae

Question 12

Can cause similar infection to Group A and B but is more prominent in immunocompromised patients

Answer 12

S. dysagalactiae subsp. equisimilis

Question 13

Causes pyogenic infection (Creation of Pus) which associated with abscess formation

Answer 13

S. anginosus

Question 14

Streptococcus infection that is associated with nosocomial infection or health-care associated and includes UTI, bacteremia, endocarditis, and wound infection

Answer 14

E. faecalis, E. faecium

Question 15

Slowly evolving (Subacute) endocarditis in patients with previously damaged heart valve

Answer 15

S. mutans, S. sanguinis (Viridans)

Similar to S. epidermidis “Prosthetic heart valve endocarditis”

Question 16

Leading cause of meningitis and pneumonia with or without bacteremia

Answer 16

S. pneumoniae

Question 17

What contains in S. pneumoniae which is unrelated to lancefield group?

Answer 17

C polysaccharide

Question 18

Nutritionally variant strep

Answer 18

Abiotrophia spp.

Question 19

Streptococcus pneumoniae contains capsule

T or F

Answer 19

T