The vaccine just reduces the likelihood that you will get seriously ill if you get the disease, it doesn’t make it zero. With it being a zoonotic virus it does all sorts of mutating and random things over time, so the vaccine may not permanently work for anyone long-term. It’s not far beyond the realms of possibility that we could end up in another global outbreak situation. Wouldn’t that be fun.

At the bare minimum I would recommend everyone to stop licking each other. Also wash your hands when you go to the bathroom so many people don’t do that it’s ridiculous.