The CDC yesterday confirmed another infection with 2019 novel coronavirus (COVID-19) in the United States in California. The patient is among a group of people under a federal quarantine order because of their recent return to the U.S. on a State Department-chartered flight that arrived on February 7, 2020. All people who have been in Hubei Province in the past 14 days are considered at high risk of having been exposed to COVID-19 and subject to a temporary 14-day quarantine.