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Microbiology > L8 > Flashcards

L8 Flashcards

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Biology 101 flashcards
1
Q

Streptococci
Gram?
shape?
arranged in?

A

positive
cocci
arranged in pairs or chains.

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2
Q

Alpha -hemolysis Streptococci

A
  • Streptococcus pneumoniae and Streptococcus viridans
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3
Q

Beta-hemolysis Streptococci

A

Streptococcus pyogenes and Streptococcus agalactiae

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4
Q

Gamma -hemolysis Streptococci

A

Enterococci

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5
Q

group A?

A

Streptococcus pyogenes

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6
Q

group B?

A

Streptococcus agalactiae

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7
Q

Pyrogenic exotoxin A of Streptococcus pyogenes

A

scarlet fever

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8
Q

Pyrogenic exotoxin B of Streptococcus pyogenes

A

flesh-eating bacteria

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9
Q

Pyrogenic exotoxin C of Streptococcus pyogenes

A

toxic shock syndrome

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10
Q

Streptolysins use in?

A

ASO

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11
Q

most common infection transmitted by inhalation of droplets

A

Sore throat or pharyngitis

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12
Q

start as itching papules that break & form a yellow crust (Honey crust), it is highly contagious

A

Pyoderma (impetigo)

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13
Q

skin infection characterized by redness, oedema and a rapidly
advancing margin, often on the face

A

Erysipelas

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14
Q

diffuse inflammation affects all layer of skin without localization of
pus.

A

Cellulitis

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15
Q

: infection of uterus after delivery

A

Puerperal sepsis

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16
Q

Deformed heart or rheumatically affected valve encourages condition

A

Acute bacterial endocarditis

17
Q

Toxigenic infection

A

Necrotizing fasciitis & Scarlet fever

18
Q

Invasive infection

A

Erysipelas
Cellulitis
Puerperal sepsis
Acute bacterial endocarditis

19
Q

Acute glomerulonephritis

A

type III hypersensitivity reaction

20
Q

Acute rheumatic fever treated by

A

long-acting penicillin.

21
Q

cross reactivity, antibody against M protein react with heart valves

A

Acute rheumatic fever

22
Q

Streptococcus pyogenes- Treatment

A

Penicillin & Erythromycin is alternative (allergic to Penicillin).

23
Q
  • Long-acting penicillin should be given as a
A

chemoprophylaxis

24
Q

Streptococcus agalactiae

A

female Genital tract & Diseases: neonatal meningitis

25
Q

Bacitracin disc sensitivity in Streptococcus agalactiae

A

negative

26
Q

Lancefield Serogrouping in Streptococcus agalactiae

A

group B

Microbiology (10 decks)

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