GRAM (+) – ALPHA HEMOLYTIC STREPTOCOCCI

Question 1

Lancet-shaped, dimple/donut shaped
NM, NS, encapsulated, requires 5-10% CO2

Answer 1

S. pneumoniae

Question 2

Young colonies of S. pneumoniae

Answer 2

Mexican hat

Question 3

Old colonies of S. pneumoniae

Answer 3

nail head/checker head

Question 4

Test for capsule of S. pneumoniae

Answer 4

Neufeld Quellung

Question 5

1 cause of adult bacterial meningitis

Answer 5

S. pneumoniae

Question 6

Otitis media, lobar pneumonia, bacterial meningitis, sinusitis/sepsis

Answer 6

S. pneumoniae

Question 7

skin test for Strep. pneumoniae

Answer 7

Francis test

Question 8

Opportunistic pathogens

Answer 8

Viridans Streptococci
S. mitis / S. mutans
S. sanguinis / S. anginosus
S.salivarius

Question 9

Pyridoxal-dependent or vitamin B6-dependent

Answer 9

Abiotrophia

Question 10

nutritional variant streptococci or GRANULICATELLA

Answer 10

Abiotrophia

Question 11

Cell wall deficient; low virulence
Opportunistic pathogens
Satelliting streptococcus

Answer 11

Satelliting streptococci called as Abiotrophia