some UA857 pax was receiving message from United as follows, will United somehow require negative test results for China flight in additiona to face-covering etc.?
"United strongly urges our passengers to obtain a COVID-19 test in the U.S. and confirm a negative result within 48 hours before traveling. If this doesn’t work for your travel plans, you can rebook your flight or apply the value of your ticket toward another destination. Please use the United app, visit united.com or call us at 1-800-UNITED-1 to check out your options."