Posted: Sat May 23, 2020 9:37am
Because there is no instant test. Plus, and I may be wrong on this, but I believe this is the case, that you can still be a carrier of the virus but test negative. But mostly, because there isn't an instant test. Even if there was, how would it work?
Again, I'm not 100% on this, but the average Easyjet plane has 180 seats. Heathrow has about 1800 planes a day landing. Let's knock that number right back to 300 a day on average per airport. That's 54,000 people a day to be tested in airports. Can you even begin to imagine the infrastructure needed for such an undertaking, not to mention the delays it would cause?
It's neither feasible or even possible to test people coming in.
Again, I've figures to hand, but the percentage of "business" that requires free-flowing international travel to operate I would guess is tiny, far less than 1% I'd suggest. So, the quarantine restrictions will have a minimal effect on business in general, and people getting back, and so the economy.
My usual caveat: I'm not supporting the decision, or the government, or anything, just trying to give you an answer, but that may well be wrong.