Just another example why travel during this time is risky and increases your chances of being trapped in a country. I doubt the SE Asia trips can go on at this time in the near future, since they have also stopped issuing visa's which you need to travel there on the
ABD trip.
Health and Travel Alert – U.S. Embassy Hanoi and U.S. Consulate General Ho Chi Minh City, Vietnam (March 18, 2020)
Location: Vietnam
The U.S. Embassy in Hanoi and the U.S. Consulate General in Ho Chi Minh City advise all U.S. citizens residing or traveling in Vietnam that
the number of commercial flights departing Vietnam is rapidly decreasing. If you are considering departing Vietnam, the U.S. Embassy advises U.S. citizens to make travel arrangements as soon as possible.