What are the age-related demographics and mortality rates of bacterial pneumonia?

Updated: Sep 30, 2020
  • Author: Justina Gamache, MD; Chief Editor: Guy W Soo Hoo, MD, MPH  more...
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Answer

Advanced age increases the incidence of and the mortality from pneumonia. Comorbidity and a diminished immune response and defense against aspiration increase the risk of bacterial pneumonia. For individuals aged 65 years and older, pneumonia and influenza were the sixth leading cause of death in 2005. [30, 31] Close to 90% of deaths due to pneumonia and influenza occurred in this age group. In a 20-year US study, the average overall mortality rate in pneumococcal pneumonia with bacteremia was 20.3%. Patients older than 80 years of age had the highest mortality rate, which was 37.7%. [32]


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