Pneumonia is an inflammation of the lungs characterized by [[fever]], chills, muscle stiffness, chest pain, cough, shortness of breath, rapid heart rate and difficulty breathing.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#p</ref>
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'''Pneumonia''' is an inflammation of the lungs characterized by [[fever]], chills, muscle stiffness, chest pain, cough, shortness of breath, rapid heart rate and difficulty breathing.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#p</ref>