Even if you are not quarantined by health officials, some companies are requiring employees who have been traveling to work remotely, he added. And things are changing rapidly.

“Those answers may vary depending on ongoing public health changes,” Dr. Weisenberg said. “Once we have widespread testing available, then it will be easier for travelers to have a better idea of what the risk is in different areas.”

I booked an Airbnb. If I cancel, can I get my money back?

Airbnb recently updated its “extenuating circumstances” policy, making it easier to get a refund in some countries.

If you have a reservation in the United States, mainland China, South Korea or Italy, and you wish to cancel it, you can do so free of charge for bookings generally through the beginning of April.

In the United States, if you have a reservation and you choose to cancel it, the company will fully refund you (including any fees) if you booked on or before March 13, with a check-in date of April 1, or earlier. (Check Airbnb’s website for the policy for mainland China, South Korea and Italy.)

You will also get a full refund if you are traveling from the United States and have a reservation in Europe’s Schengen Area. (The policy applies to reservations that have been made on or before March 11, for travel between March 13 and April 13.)

If you are a guest in any other country and you cancel, the company will fully refund your booking if you meet the following criteria: If you cannot complete your trip because of official travel restrictions, medical or disease control duties related to the coronavirus; if your flight or ground transportation is canceled by your carrier because of Covid-19 — or a suspected or confirmed cases of Covid-19; or if you are complying with disease control restrictions implemented by relevant governmental or health authorities.