Hospital-acquired pneumonia

Etiology

More common

  • Pseudomonas aeruginosa 
  • Staphylococcus aureus 
  • Enterobacter 
  • Klebsiella pneumoniae 
  • Escherichia coli 

Less common

  • Proteus 
  • Serratia marcescens 
  • H. influenzae 
  • Streptococci
  • Acinetobacter 

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