Signs and Symptoms of Plague: An Overview
When a person becomes infected with the bacteria that cause
plague (
Yersinia pestis), the bacteria begin to multiply. After one to six days, symptoms of plague can occur. The period between becoming infected and the start of symptoms is called the
plague incubation period. If a person is not treated immediately, symptoms can rapidly worsen, and death may occur.
There are three types of plague:
Each type has different symptoms. It is possible for a person to have symptoms of only one type; it is also possible for a person to experience symptoms from each of the types. For example, a person may first develop
bubonic plague symptoms, followed several days later by septicemic plague, and then by pneumonic plague.
- Buboes (tender, enlarged lymph nodes found under the armpits, in the neck, or in the groin, ranging in size from 1 to 10 cm., in 70 percent of people)
- Fever
- Headache
- Chills
- Abdominal (stomach) pain
- Diarrhea, which may be bloody
- Nausea
- Vomiting
- Decreased appetite
- Tiny broken blood vessels (called petechiae).