PNEUMONIA INFECTIOUS AGENTS

1.Haemophilus influenza -Smokers, COPD
2.Mycoplasma --------Young, otherwise healthy patients
3.Legionella --------Epidemic infection in older smokers, particularly when located near infected water sources, such as air-conditioning systems

4.Pneumocystis jiroveci (formerly carinii) pneumonia HIV-positive persons with <200 CD4 cells not on prophylaxis.
5.Coxiella burnetti (Q-fever) Exposure to animals, particularly at the time they are giving birth
6.Klebsiella Alcoholics
7.Staphylococcus aureus Following viral syndromes or viral bronchitis, especially influenza
8.Coccidioidomycosis Exposure to the deserts of the American Southwest, particularly Arizona
9.Chlamydia psittaci Exposure to birds
10.Histoplasma capsulatum Exposure to bat or bird droppings, spelunking (recreational cave exploration)
11.Bordetella pertussis Cough with whoop and post-tussive vomiting
12.Francisella tularensis Hunters, or exposure to rabbits
SARS, Avian injluenza Travel to Southeast Asia
13.Bacillus anthracis, Yersinia pestis, and Francisella tularensis Bioterrorism

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