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Plague facts

• A bacterium, Yersinia pestis, causes the disease in animals and humans.
• Plague is a disease that is transmitted from infected animals, usually by fleas, to humans. Plague then may be transmitted from humans to others by direct contact or by touching or breathing droplets that contain the bacterium, Yersinia pestis. Untreated plague causes much suffering and deaths in humans.
• Symptoms of plague vary and are grouped into three types:
• Bubonic: The lymph nodes become swollen, tender, and are termed buboes. The patient may also develop fever, chills, and weakness.
• Septicemic: In general, septicemic plague patients do not develop buboes. Instead symptoms may include fever, chills, weakness, bleeding under the skin, abdominal pain, and septic shock with low blood pressure.
• Pneumonic: Shortness of breath, cough (sometimes with bloody sputum), and chest pain quickly de...

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