Both the AAMC and CORD have both strongly recommended that all interviews be done virtually, that being said, it is up to the program. We are doing virtual. Some things to consider:
1. Potential of unknowingly exposing applicants as well as your residents and faculty. Applicants may have just traveled via plane through multiple airports.
2. Putting applicants in a position of having to decide between the risks associated with in-person interviews and not interviewing.
3. Potential of putting applicants in a situation of violating their institutional travel bans.
There are additional things to consider but I think these are possibly the most relevant.