Active Monitoring of Persons Exposed to Patients with Confirmed COVID-19 — United States, January–February 2020
Active Monitoring of Persons Exposed to Patients with Confirmed COVID-19 — United States, January–February 2020
In December 2019, an outbreak of coronavirus disease 2019 (COVID-19), caused by the virus SARS-CoV-2, began in Wuhan, China (1). The disease spread widely in China, and, as of February 26, 2020, COVID-19 cases had been identified in 36 other countries and territories, including the United States. Person-to-person transmission has …