Pneumonia (Pathogens)

Condition

==Commonly Encountered Pathogens==

Alcoholism Streptococcus pneumoniae

Anaerobes, e.g. Klebsiella pneumoniae

Mycobacterium tuberculosis

COPD and/or Smoking S pneumoniae

Haemophilus influenzae

Moraxella

Legionella

Nursing Home S pneumoniae

Gram-negative bacilli

H influenzae

Staphylococcus aureus

Anaerobes

Chlamydia pneumoniae

Exposure to: Bird droppings Histoplasma capsulatum

    Birds	Chlamydia psittaci	
    Rabbits	Francisella tularensis	
    Farm animals	Coxiella burnetii (Q fever)

SW US Coccidiomycosis (Valley fever) HIV

    Early	S pneumoniae

H influenzae

M tuberculosis

    Late	As above, plus:

Pneumocystis jiroveci (formerly Pneumocystis carinii)

Cryptococcus

Histoplasma species

Aspiration Anaerobes Structural Lung Disease

(CF, bronchiectasis)

Pseudomonas aeruginosa

Burkholderia (Pseudomonas) cepacia

S aureus

Injection Drug Use S aureus

Anaerobes

M tuberculosis

S Pneumo

Influenza InfluenzaS pneumoniae

S aureus

H influenzae