click below
click below
Normal Size Small Size show me how
Pneumonia Causes
Specific causes of pneumonia in specific populations
Agent | Population |
---|---|
Haemophilus influenza | Smokers, COPD |
Mycoplasma | Young, otherwise healthy patients |
Legionella | Epidemic infection in older smokers, particularly when located near infected water sources, such as air-conditioning systems |
Pneumocystis jiroveci (formerly carinii) pneumonia | HIV-positive persons with <200 CD4 cells not on prophylaxis. |
Coxiella burnetti (Q-fever) | Exposure to animals, particularly at the time they are giving birth |
Klebsiella | Alcoholics |
Staphylococcus aureus | Following viral syndromes or viral bronchitis, especially influenza |
Coccidioidomycosis | Exposure to the deserts of the American Southwest, particularly Arizona |
Chlamydia psittaci | Exposure to birds |
Histoplasma capsulatum | Exposure to bat or bird droppings, spelunking (recreational cave exploration) |
Bordetella pertussis | Cough with whoop and post-tussive vomiting |
Francisella tularensis | Hunters, or exposure to rabbits |
SARS, Avian injluenza | Travel to Southeast Asia |
Bacillus anthracis, Yersinia pestis, and Francisella tularensis | Bioterrorism |