How is bacterial infection transmitted in hospital-acquired pneumonia (HAP)?

Updated: Apr 15, 2021
  • Author: Kartika Shetty, MD, FACP; Chief Editor: John L Brusch, MD, FACP  more...
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Inhalation, aspiration, and hematogenous spread are the 3 main mechanisms by which bacteria reach the lungs. The primary route by which organisms enter the lower airways is aspiration of oropharyngeal secretions into the trachea.

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