Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty breathing. A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia.
Pneumonia can range in seriousness from mild to life-threatening It is most serious for infants and young children, people older than age 65, and people with health problems or weakened immune systems.
March 14, 2015
- Pneumonia. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/pnu. Accessed Jan. 20, 2015.
- AskMayoExpert. Community-acquired pneumonia. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2015.
- Longo DL, et al. Harrison's Principles of Internal Medicine. 18th ed. New York, N.Y.: McGraw-Hill; 2012. http://accessmedicine.mhmedical.com/book.aspx?bookid=331. Accessed Jan. 21, 2015.
- Schauner S, et al. Community-acquired pneumonia in children: A look at the IDSA guidelines. Journal of Family Practice. 2013;62:9.
- Attridge RT, et al. Health care-associated pneumonia: An evidence-based review. American Journal of Medicine. 2011;124:689.
- Hunter JD. Ventilator associated pneumonia. BMJ. 2012;344:e3325.
- Dockrell DH, et al. Pneumococcal pneumonia: Mechanisms of infection and resolution. Chest. 2012;142:482.
- Reynolds RH, et al. Pneumonia in the immunocompetent patient. The British Journal of Radiology. 2010;83:998.
- Rosenow EC (expert opinion). Mayo Clinic, Rochester, Minn. Jan. 20, 2015.
- Centers for Disease Control and Prevention. Adults: Protect yourself with pneumococcal vaccines. http://www.cdc.gov/features/adult-pneumococcal/. Accessed Jan. 20, 2015.
- Marrie TJ, et al. Pneumococcal pneumonia in adults. http://www.uptodate.com/home. Accessed Jan. 20, 2015.
- Barbara Woodward Lips Patient Education Center. Care following hospitalization for community-acquired pneumonia. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2013.
- AskMayoExpert. Community-acquired pneumonia (pediatric). Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2014.
- Barson WJ. Community-acquired pneumonia in children: Outpatient treatment. http://www.uptodate.com/home. Accessed Jan. 21, 2015.
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