srept. pnumonia

Question 1

where dose it found as Normal flora?

Answer 1

oropharynx

Question 2

what's its result in the following: 
gram stain
hemolysis
catalase
optochine sensetivity 
quellung test
bile sensetivity

Answer 2

Gpositive
B hymolysis 
C negative 
O sensitive
Q positive
bile sensetive

Question 3

how does it’s colonies appears?

Answer 3

transparent, slightly mucoid, or flattened, not packed.

like checkers playing piece

Question 4

what’s the most common disease in adult and children?

Answer 4

pneumonia, meningitis.

sinusitis, otitis media.

Question 5

mention the three capsulated pyogenic bacteria.

Answer 5

S. pneumonia
N. meningitidis.
H. infelunza.

Question 6

Habitat and transmission?

Answer 6

upper respiratory tract

via respiratory droblet

Question 7

what is the pathogenis?

Answer 7

iduce inflammatory response
no exotoxins
polysaccharide capsule retard phagocytosis
IgA Protease degrade IgA on respiratory mucosa allowing colonization.

Question 8

what’s the factor obtainig a specific amunity against S pneumonia?

Answer 8

anti polysaccharide antibody

Question 9

mention some predisposing factors?

Answer 9

1_malnutrition,general dability,sickle cell anemia
2_viral and other R.T infections that damage cell
3_abnormal accumulationof mucus «allergy»
4_abnormal circulatory dynamics (pulmanary congestion,heart failure)
5_Alchohol or drug intoxication «depression of phagocytosis and cough reflex»
6_hyposplenism,splenectomy,nephrosis
7_compelmentry deficiency
8_skull fracture with spinal fluid leakage from nose

Question 10

what’s the treatment for s. pneumonia?

Answer 10

Pencillin G

Question 11

compare between S. pneumonia and S. viridans.
1_capsule
2_lyses in media
3_lysis by ox bile or sodium deoxycholate
4_around optochine growth
5_fermentation of inulin

Answer 11

1_capsulated.     non.
2_lyses spontanously.      dont
3_lysed,soluble.             not lysed,insoluble 
4_growth inhibited.        not 
5_ferment inulin.            dont