那些已经在美的访问学者中的医护人员可与ECFMG(Educational Commission for Foreign Medical Graduates) 联系，延长签证期限。
Update on H and J Visas for Medical Professionals
Last Updated: March 26, 2020
We encourage medical professionals seeking to work in the United States on a work or exchange visitor, particularly those working to treat or mitigate the effects of COVID-19, to reach out to the nearest embassy or consulate to request a visa appointment.
For those foreign medical professionals already in the United States:
J-1 Alien Physicians (medical residents) may consult with their program sponsor, ECFMG, to extend their programs in the United States. Generally, a J-1 program for a foreign medical resident can be extended one year at a time for up to seven years.