My mother in law, here in France, has more health conditions than I can list (depression, thyroid problems, internal prolapses, Central and chronic pain and she's currently bed-bound with severe shingles) but most obviously in terms of covid, she's 67 and has emphysema.
My father in law is nearly 84 but in good health. We have a house that's cut in two, but we cook for them every day, we're in and out of their house all the time, so is our three year old.
They've got no idea when either of them is likely to get a vaccination. Her Dr is useless and stubborn, but so many of the GPs here in the sticks are older and not taking on new patients.
In many ways the French healthcare system is superb, but it's a bureaucratic slow piece of utter shite in so many other ways and when it's not working, it really doesn't fucking work.