Let me spell it out for you.
Vaccination works. For a while. Just like antibiotics. Eventually though, the strain you use in your vaccine becomes extinct. It is replaced by ones that you do NOT vaccinate for. That were ALWAYS there in the natural circulating wildtype population. And more that have room to ‘grow’ due to the extinction of the predominant strain you used in the vaccine. Those seem to be, for pertussis example, WAY more virulent than the one you started with.
And now they become the dominant strain and your vaccine is worthless. Like penicillin became in the 70’s and 80’s.
I still remember when public health officials wanted to put antibiotics in the water supply in the 60’s and 70’s. Just as bad an idea.
When you play natural selection games with the bugs they win. Every time. We have one generation every 20+ years. Bugs have several every single day. They have plenty of time to throw genetic spaghetti against the wall. And win.
And what was a childhood disease with X mortality becomes a disease EVERYONE can get but now you have X + Y mortality where Y is a huge number.
And that childhood disease threatens to become a new pandemic. That you have limited ability to treat. Because you never really learned to TREAT that disease because your only ‘prevention’ was the vaccine.
Lather, rinse, repeat.
Simply put: it is like trying hit a moving target. Especially with the flu vaccine.
See my post below.
My point: do nothing and you have a much worse situation than if there were treatment. Millions of sick contagious carriers means a much greater likelihood of mutation. Not to mention, millions of deaths. And the few who survive? Will great for them. So, nipping it in the bud is the best solution.