For example, a hunter can pick up the disease while skinning or handling an animal with the illness. People also can get plague from direct contact with tissues of a sick animal. The fleas are likely to come from small wild animals or from pets. People are most likely to get plague from a flea bite. Other animals can get plague by eating small animals with the disease or picking up their fleas. In the western United States, these animals include: The bacteria circulate in populations of small animals and their fleas. Plague is caused by a bacteria called Yersinia pestis. The countries with frequent cases include Madagascar, the Democratic Republic of Congo and Peru. In the western United States, most cases have been in Arizona, California, Colorado and New Mexico.Ĭases have occurred in Africa, Asia and Latin America. Get emergency care if you have a sudden high fever or other symptoms and you live in an area that has had cases of plague. Get immediate care if you have a sudden high fever. If treatment is not begun the first day, the disease progresses rapidly to failure of the lungs, shock and death. Symptoms can begin within a few hours after exposure and worsen rapidly. The disease may begin in the lungs, or it may spread from infected lymph nodes to the lungs. Blackening and death of tissue, called gangrene, most commonly on the fingers, toes, ears and nose.Signs of shock, such as seizure, rash and low blood pressure.
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