Definition

Plague is a bacterial infection.

There are 3 types:

  • Bubonic—most common
  • Pneumonic—rare, but almost always leads to death
  • Septicemic

Causes

Certain bacteria cause plague. How it spreads:

  • Bubonic and septicemic—
    • A bite from an infected flea
    • Exposure to bodily fluids from a sick person or animal
  • Pneumonic—breathing it in after a person coughs or sneezes
Spreading Pneumonic Plague
Breathing in droplets from an infected person.
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Risk Factors

Your risk is higher if you live in or travel to places where plague is common. It’s found in the southwestern and western US, and other parts of the world.

Risk is also higher if you:

  • Are in contact with a person who has plague
  • Work with animals
  • Get a flea bite

Symptoms

Bubonic:

  • Fever
  • Chills
  • Weakness
  • Headache
  • Swollen, tender lymph nodes—your skin may appear red and tight over these areas

Pneumonic:

  • Fever
  • Weakness
  • Headache
  • Cough
  • Bloody or watery mucus
  • Breathing problems
  • Chest pain

Septicemic:

  • Bleeding under the skin
  • Black fingers, toes, or nose
  • Fever
  • Chills
  • Weakness

Diagnosis

Your doctor will ask about your symptoms, and health and travel history. You may have:

Public health officials will work quickly to find the source of plague to set up testing and care.

Treatment

Antibiotics treat the infection. Care will start right away. This may include isolation.

For the septicemic type, your healthcare team will support your organs, blood pressure, and oxygen supply while your body fights the infection.

Prevention

If exposed to plague, you’ll need to take antibiotics for 7 days. People who care for you will need to wear masks.

If there is a terrorist attack, medicines go to those who have signs of infection.

To help lower your chances of plague:

  • Control the number of rodents near your home, since they carry fleas.
  • Wear gloves when handling or skinning animals.
  • Use bug sprays with DEET.
  • Use flea control on your pets.
  • Keep dogs and cats from sleeping in your bed if they roam in places where the disease is common.

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