Plague — China
Two people in China have been diagnosed with plague, the latest cases of a disease more commonly associated with historical catastrophe.
Plague is caused by the bacterium _Yersinia pestis_ and can arise in 3 forms — a lung infection, known as pneumonic plague; a blood infection, known as septicemic plague; and a form that affects the lymph nodes, called bubonic plague. This infection was behind several pandemics including the Black Death of the late middle ages, which is estimated to have
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