
I admit to not yet having waded through all you have written here, but I would say I'm at odds with some of what I have picked up on....... for instance regarding vaccination, natural immunity via mum's colostrum should last until around week 5, after which time it gradually drops away until by around 8 weeks, it's felt safe to begin external vaccination with a good chance it will 'take'. And in the UK, repeat 2 weeks, sometimes 3 depending on the vet, later. And then booster 12 months on. These days it's reliably felt boostering every 3 years is enough - apart from the one for Leptospirosis, which does dip over a 12 month period. Clearly to be sure what's needed, each puppy should be titre tested - but who can really afford to do that ...... I asked and was quoted £60. and it's not totally accurate either.
And actually we DID have epidemics of things like Distemper. For sure, if everybody stopped vaccinating/boostering these seldom seen often fatal diseases may again become rift.
I also believe that there was no surprise that a Parvo vaccine was available 'ready and waiting'. There were most probably isolated cases of this starting, which had the scientists working on something to help prevent this. In fact our second hound, born in 1973, went down with something these days I'd have thought was definitely Parvo. As it was it was said to be a severe gastroenteritis - he was so sick that as we were moving out to Canada at the time, he went back to his breeder who nursed him back to health so he could join us, 4 months later.
I am with you re over-boostering and mine are both on a 3-yearly regime, as above and as in the past, I probably won't rebooster once they are around 8. I have always done this with mine in the past although right now, we live in a heavily dog-populated area (with loads of visitors throughout the summer plus their dogs too) so I may have to rethink that.
I don't take all my vets over the years say (and lately even more so!!!) but there has to be trust between vet and client so if you can't trust your vet, find one you can. I had one for 13 years, and KNEW she'd never advise us to do anything that was centered around anything other than the well-being of my hounds - it certain wasn't about money with her.
Each to their own, but I'm sorry, I can't agree with much of what you have written - which I have now read through.