I don't remember anymore, but I think that was one of the questions in the FAQ of one or two of the medical authorities that I once read. They said something that the vaccine production does not use animal products (or was it no other animals than humans? don't remember). Try CDC, EMA or ECDC or some such.I just had a thought too. These vaccines aren't vegan. Not that it matters to me, but I wonder how the vegans are handling it.
Well I guess there's always eventually herd immunity. Given enough time and too ineffective prevention, any virus will eventually reach all humans, so the ones left alive after long enough must be because they became immune.
Worst case, the herd gets to size 0, but hey, all of those 0 are immune.
Not saying herd immunity is anywhere near a good policy. It's more like a NOP.
As you say, vaccines don't give herd iimunity, at most might let people become infected and survive, and that infection give them better immunity, but I have no clue whether natural infection (with or without vaccine) leaves you any less likely to spread than vaccine.
I simply think nobody knows and the world is basically divided into those who don't want to see the problem, and those which want to do anything that might be sold as a solution. I'm almost alone in thinking that the solution is not something to do, but some things to stop doing.
I just had a thought too. These vaccines aren't vegan. Not that it matters to me, but I wonder how the vegans are handling it.
There's that 2 months again.
That may be so. I thought natural immunity lasted longer, but I never read anything definitive about it. But my point (or whatever it was) was more than with enough time, either the virus dies out or the people die out. If people are vulnerable again in 8 months, and say one in 20 infected die, then with the virus everywhere, people should die in 8*20 months (somewhat wild assumptions there, but you get the idea, make it 15 years or 20 if you want, but if the virus stays it'll eventually infect everyone multiple times and eventually kill all, or else we'll assume survivors are immune). If the virus is deadly then the herd either becomes immune or dies and becomes an immune 0-size herd. Yes there could be other possibilities, like people under 20 are immune and the older population dying is slow enough to reproduce more young humans and replenish the herd, I glossed over too many details, but I was only trying to say that herd immunity is just letting the virus do its business, it's no policy at all, it's a form of denial.Herd immunity is going to be difficult to achieve. So far, our research seems to show (and could indeed be hearsay or outright wrong) that a COVID infection grants immunity for around 8 months, after which time you can catch it again. That gives us a roughly 8 month window during which everyone needs to catch it in order for it to die out.
That's gonna be tough to achieve.