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 |