Not a chance unless there is some drastic change for the worse in the COVID situation within Europe. I think the current system of flight bans to specific countries and domestic regional-level alert levels is working well. There was some increase because of resurgent (though reduced) tourism, repatriated citizens, arrival and movement of students, and so on — but the situation was managed effectively and is clearly under control. The big question is to what extent things will change now that kids are returning to school and college en masse.
There will obviously be a spike of some degree just as there was throughout the late summer, hopefully very small, but if people keep following the rules and wear masks as necessary the change in trajectory should be minimal. Outbreaks can be isolated and contained as they occur. I’m honestly not counting on a widespread vaccine anytime soon, and I strongly believe that in-person learning at schools needs to continue. It is unfair to rob young people of their education and socialization because of flat-out paranoia and some vague hope for a cure.
Personally, I think that Poland did a great job with the initial early lockdown and dodged a big bullet. No matter how much some Poles will hate the government’s decisions (no matter what they do, ’cause it’s PiS) the government has developed a smart and consistent policy which is now paying off. I’m proud to be Polish.