I work in the field. When we first became aware in January 2020, back then I estimated this will be "newsworthy", in that its something we are all generally aware of, for 5 years, so by early mid-2025 it will cease to be remarkable. I'm sticking to that.
Put this in perspective; the US, and Europe to an extent, endured a 40 year Polio epidemic. This meant that schools were regularly closed during outbreaks, pools and beaches were regularly closed during periodic outbreaks. When Roosevelt came to power, and he was a Polio survivor, he set up what was, in retorspect, the first crowdfunder for a new medicine; the million dime drive to get a vaccine developed. 20 years later, Salk developed his vaccine, and Eisenhower was in tears when he awarded him a medal in appreciation. Beside a massive boost to vaccine research, one good thing that came out of Polio was Intensive Care Medicine, which we now couldn't imagine medicine would be without. I can see some silver lining to this who sorry affair, some of which will have huge beneficial impacts in healthcare. Well the mRNA vaccines were being originally developed for malaria and cancer, the former struggling for funding as malaria is not something that's commercially attractive. Well, we've now moved a step closer to making that a reality, and millions will see lives transformed. And cancer vaccines are looking very viable.
The EU has a 270 day rule for vaccine certificates; you need to have had a booster no more than 270 days before travel, and no less than 14days. Singapore, Israel and Bahrain enacted the same ruling. The UK takes a similar path, in terms of defining "full vaccinated".