They're trying to determine how transmissible and virulent it is.
Some countries have imposed stricter rules, not just for travel but access to restaurants and other public places.
Early indications are it's more transmissible, better able to evade vaccines.
Been looking at some fares for like April to early June.
But this period may be too early. I think most of the EU nations didn't open up to American tourists until like early June?
There was also a column in the WSJ last week that a lot of pre-pandemic policies on cancellations and refunds were creeping back into the travel industry.
So be careful when you book. For instance, Airbnb has a filter that says "free cancellations." But some hosts will require cancellation like 2 months before the reservation to get a refund.
Or Hawaii Airbnbs are like you only get 50% back when you cancel before the end of the year.
So watch those carefully.