Plague is an infectious disease that affects rodents, certain animals and humans. It is caused by the<unk><unk>  bacteria. These bacteria are found in many areas of the world, including the United States. There are 3 types of plague (bubonic, pneumonic and septicemic). Common symptoms of the disease include: fever, headache, chills, muscle pain, nausea and vomiting. The bubonic plague is characterized by swollen lymph nodes; the pneumonic plague by a rapid developing pneumonia; and the septic plague by bleeding and necrosis of tissues. People who live in rural areas, in contact with rodents are at higher risk of contracting the disease. The plague may be diagnosed by the signs and symptoms present in the patient and by laboratory culture of blood, sputum or lymph node aspirate. Complications may include: pneumonia, septicemia, shock and death. With adequate antibiotic treatment the mortality rate is about 8-10%.
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