International travel will mostly rebound, but it might take a few years.
CDC just claimed that unreported C19 numbers are 24 times reported positives. That is a big deal when trying to reopen the world.
Which just means most cases aren't as bad as the regular annual flu. I think that there's a very good chance I had it back in February, but I'm not willing to pay a couple of hundred bucks for a test (for antibodies) that may not be accurate anyway. I've not 'sheltered in place, and I've dined out at the restaurants when they reopened. One thing I'm not willing to do is get on a Boeing designed plane. I might be willing to fly on a 717 if I could find a flight that uses them (all outside air - no recirculation like you find on most airliners).