Community-acquired pneumonia related to intracellular pathogens

Catia Cillóniz, Antoni Torres, Michael S. Niederman, Menno van der Eerden, James D. Chalmers, Tobias Welte, Francesco Blasi

Research output: Contribution to journalReview articlepeer-review

Abstract

Community-acquired pneumonia (CAP) is associated with high rates of morbidity and mortality worldwide; the annual incidence of CAP among adults in Europe has ranged from 1.5 to 1.7 per 1000 population. Intracellular bacteria are common causes of CAP. However, there is considerable variation in the reported incidence between countries and change over time. The intracellular pathogens that are well established as causes of pneumonia are Legionella pneumophila, Mycoplasma pneumoniae, Chlamydophila pneumoniae, Chlamydophila psittaci, and Coxiella burnetii. Since it is known that antibiotic treatment for severe CAP is empiric and includes coverage of typical and atypical pathogens, microbiological diagnosis bears an important relationship to prognosis of pneumonia. Factors such as adequacy of initial antibiotic or early de-escalation of therapy are important variables associated with outcomes, especially in severe cases. Intracellular pathogens sometimes appear to cause more severe disease with respiratory failure and multisystem dysfunction associated with fatal outcomes. The clinical relevance of intracellular pathogens in severe CAP has not been specifically investigated. We review the prevalence, general characteristics, and outcomes of severe CAP cases caused by intracellular pathogens.

Original languageEnglish
Pages (from-to)1374-1386
Number of pages13
JournalIntensive Care Medicine
Volume42
Issue number9
DOIs
Publication statusPublished - Sep 1 2016

Keywords

  • Community-acquired pneumonia
  • Etiology
  • Intracellular pathogens
  • Pneumonia

ASJC Scopus subject areas

  • Critical Care and Intensive Care Medicine

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