Microbiology - Pneumonia Streptococci
Terms
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streptolysin
O and S -
hemolysins that lyse red blood cells and damage various host cells
O: oxygen labile
S: oxygen stabile - streptokinase
- fibrinolysin digests fibrin in the inflammatory barrier
- Group A Streptococci
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Lancefield group:
Streptococcus pyogenes
grouped by carbohydrate antigens
80 different groups in Group A according to their M proteins - pharyngitis
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infection of the pharynx:
enlarged lymph nodes,
purulent exudate,
erythema,
fever, headache, pain - erythema
-
redness of the skin
due to dialted capillaries - pleurisy
-
inflammation of the
pleural cavity (lungs) - puerperal fever
-
"childbed fever"
strep infection of uterus
can rapidly to bloodstream - pyoderma
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infection of the skin by a
pus producing (pyogenic) bacteria
[impetigo / erisypalis] - edematous
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an accumualtion of body fluids
(found in the lungs from pneumonia) - serotypes
- microorganism with unique antigen that induces antigens specific for it
- atypical pneumonia
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mycoplasma pneumoniae (no cellwall)
very common, not serious (walking pneumonia)
produces long-lasting, dry hacking cough after the disease - legionella / Legionnaires' disease
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pneumonia-like illness
very rare but deadly
c.a. legionella pneumophila G- bacilli - primary typical pneumonia
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klebsiella pneumoniae
G- rod
primary or secondary infection
deadly - streptococcus pneumoniae
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"the angel"
most common cause of death in compromised patients
death is usually from septicemia - PC pneumonia
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found only in AIDS patients
c.a. Pnuemocystis Carinii (yeast?) - Haemophilis influenza
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pneumonia, most common in young children (50% carriers)
bacterial meningitis
Hib vaccine - Nocardia asteroides
-
opoortunist
lung infections