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Plague  Lesson 1
 General Overview

Bubonic Plague

  • Infection is transmitted by the bite of an infected flea or exposure to infected material through a break in the skin.
  • Bubonic plague cannot be transmitted from person to person.
  • If bubonic plague is not treated, the bacteria can spread through the bloodstream and infect the lungs, causing a secondary infection of pneumonic or septicemic plague.
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Bubonic Plague Mode of Transmission.  Transmitted from rat to flea to human but not human to human.

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Page last reviewed February 12, 2007
Page last modified September 7, 2004

  • Content source: CDC Emergency Risk Communication Branch (ERCB), Division of Emergency Operations (DEO), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)
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