On January 19, 2020, a 35-year-old man presented to an urgent care clinic in Snohomish County, Washington, with a 4-day history of cough and subjective fever.

2020 年 1 月 19 日， 一名 35 岁的男性因咳嗽和自觉发烧 4 天到华盛顿州斯诺霍米什县的一家急诊室就诊。