![]() ![]() Antibiotic treatment is effective against plague bacteria, so early diagnosis and early treatment can save lives.Plague can be a very severe disease in people, with a case-fatality ratio of 30% to 60% for the bubonic type, and is always fatal for the pneumonic kind when left untreated.Plague is transmitted between animals and humans by the bite of infected fleas, direct contact with infected tissues, and inhalation of infected respiratory droplets.Bubonic plague is the most common form and is characterized by painful swollen lymph nodes or 'buboes'. There are two main clinical forms of plague infection: bubonic and pneumonic. ![]() pestis often develop symptoms after an incubation period of one to seven days. Plague is caused by the bacteria Yersinia pestis, a zoonotic bacteria usually found in small mammals and their fleas.
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