I’m for vaccines but have concerns about those that combine several diseases in one.
Back in the day, there wasn’t as much international travel so diseases didn’t spread so far or so quickly as they do today. Add to that the open borders, visas for everyone and bio terrorists, it’s a more important than ever to protect ourselves. It’s also important that there be more safety protocols and quit pushing those vaccines which aren’t effective. This year’s flu shot was a bust as is the whooping cough and don’t get me started on Gardasil.
Some vaccines must be issued on prediction, and sometimes the prediction is wrong. Viral mutations can be frequent enough that sometimes the wrong vaccine is created for what turns out to be the actual disease. That’s not so much a matter of “ineffective” as “effective against something we thought would happen but didn’t”.
Actually ineffective ones, obviously, should be avoided.