科学家们在西伯利亚发现了已知最古老的瘟疫爆发证据，可追溯到大约 5500 年前。这一发现比黑死病早了约 200 年。研究人员分析了贝加尔湖附近狩猎采集者遗骸中的古老 DNA，发现了鼠疫杆菌，表明该疾病影响了早期人类群体。瘟疫可能通过食用受感染的器官或毛皮从土拨鼠传播给人类，也可能通过呼吸道飞沫在人与人之间传播。 AI
排序理由 从科学论文中发现古老 DNA 证据表明瘟疫爆发。[lever_c_demoted from research: ic=1 ai=0.1]
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Scientists have found the oldest known evidence of the plague, which sparked deadly outbreaks dating back about 5,500 years ago – some 200 years earlier than previously thought. The disease has sickened humans for thousands of years and wiped out a significant chunk of Europe’s p…