What is community-acquired pneumonia (CAP)?

Updated: Oct 28, 2019
  • Author: Fariba M Donovan, MD, PhD; Chief Editor: Thomas E Herchline, MD  more...
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Answer

Answer

Community-acquired pneumonia (CAP) is one the most common infectious diseases addressed by clinicians. It is a major health problem in the United States and is an important cause of mortality and morbidity worldwide. [1, 2]

CAP is defined as pneumonia acquired outside a hospital or long-term care facility. It occurs within 48 hours of hospital admission or in a patient presenting with pneumonia who does not have any of the characteristics of healthcare-associated pneumonia (ie, hospitalized in an acute care hospital for 2 or more days within 90 days of infection; resided in a nursing home or long-term care facility; received recent intravenous antibiotic therapy, chemotherapy, or wound care within the past 30 days of the current infection; or attend a hospital or hemodialysis clinic). [1, 2]


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