Third plague pandemic
The third plague pandemic was a major bubonic plague pandemic. It began in Yunnan during the Xianfeng period of the Qing Dynasty in 1855. It gradually ended in the middle of the 20th century. The plague spread to Hong Kong, Guangzhou and other places in the 1890s, and then gradually spread to more than 60 countries and regions in the world. 15 million people worldwide died.