Bubonic Plague

Feb. 14, 2024

Officials in the US state of Oregon recently said they are dealing with a rare human case of bubonic plague that was likely transmitted by a pet cat.

About the Bubonic Plague:

  • Plague is an infectious disease caused by a specific type of bacterium called Yersinia pestis, a zoonotic bacterium usually found in small mammals and their fleas.
  • pestis can affect humans and animals and is spread mainly by fleas.
  • Bubonic plague is one type of plague. It gets its name from the swollen lymph nodes (buboes) caused by the disease.
    • Called the Black Death, it killed millions of Europeans during the Middle Ages.
  • The other types of plague are:
    • Septicemic plague, which happens when the infection goes all through the body.
    • Pneumonic plague, which happens when the lungs are infected.
  • Plague can be a very severe disease in people, with a case-fatality ratio of 30% to 60% for the bubonic type, and is always fatal for the pneumonic kind when left untreated.
  • Symptoms: Bubonic plague symptoms include
    • Sudden high fever and chills.
    • Pain in the areas of the abdomen, arms, and legs.
    • Headaches. 
    • Large and swollen lumps in the lymph nodes(buboes) that develop and leak pus.
  • Transmission:
    • pestis is spread mostly by fleas on rodents and other animals. 
    • It is transmitted between animals and humans by the bite of infected fleas, direct contact with infected tissues, and inhalation of infected respiratory droplets.
  • The incubation period of bubonic plague is usually 2 to 8 days.
  • Treatment:
    • It can be treated and cured with antibiotics.
    • Antibiotics that treat bubonic plague include Ciprofloxacin, levofloxacin, moxifloxacin, Gentamicin and Doxycycline.
    • It can be fatal if it’s not treated.