January 20, 2020:
The United States Center for Disease Control and Prevention and the State of Washington reported the diagnosis of a patient with the first confirmed case of COVID-19 (SARS-CoV-2) (CDC). A 35-year-old man visited an urgent care clinic in Snohomish County, WA with symptoms of a cough and fever that had persisted for four days, as well as nausea and vomiting for two days. “He disclosed that he had returned to Washington State on January 15 after traveling to visit family in Wuhan, China. The patient stated that he had seen a health alert from the U.S. Centers for Disease Control and Prevention (CDC) about the novel coronavirus outbreak in China and, because of his symptoms and recent travel, decided to see a health care provider” (NEJM).