![]() ![]() ![]() It may also result from exposure to the body fluids from a dead plague-infected animal. Bubonic plague is mainly spread by infected fleas from small animals. The three types of plague are the result of the route of infection: bubonic plague, septicemic plague, and pneumonic plague. Occasionally, swollen lymph nodes, known as " buboes", may break open. Acral necrosis, the dark discoloration of skin, is another symptom. These symptoms include fever, headaches, and vomiting, as well as swollen and painful lymph nodes occurring in the area closest to where the bacteria entered the skin. One to seven days after exposure to the bacteria, flu-like symptoms develop. It occurs in both men and women, though historically is slightly more common among men, probably because of increased outdoor activities that put them at higher risk.A bubo on the upper thigh of a person infected with bubonic plagueįever, headaches, vomiting, swollen lymph nodes įinding the bacterium in the blood, sputum, or lymph nodes Īntibiotics such as streptomycin, gentamicin, or doxycycline īubonic plague is one of three types of plague caused by the bacterium Yersinia pestis. Plague has occurred in people of all ages (infants up to age 96), though 50% of cases occur in people ages 12–45. In recent decades, an average of seven human plague cases have been reported each year (range: 1–17 cases per year). Over 80% of United States plague cases have been the bubonic form. California, southern Oregon, and far western Nevada.Northern New Mexico, northern Arizona, and southern Colorado.Most human cases in the United States occur in two regions: Since that time, plague has occurred as scattered cases in rural areas. Plague then spread from urban rats to rural rodent species, and became entrenched in many areas of the western United States. ![]() The last urban plague epidemic in the United States occurred in Los Angeles from 1924 through 1925. Plague was first introduced into the United States in 1900, by rat–infested steamships that had sailed from affected areas, mostly from Asia. ![]()
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