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[–] DeliciousOnions 0 points 2 points (+2|-0) ago  (edited ago)

It's the idea of a 'tipping point' for an epidemic.

Let's say that 99% of people all get vaccinated. That 1% remaining is very unlikely to get sick, because the disease isn't able to survive in 99% of its hosts. So nobody gets sick.

Now let's say that 50% of people are vaccinated. Now the disease can spread, because enough of the people exposed are also unvaccinated that there's a chance of it continuing on.

This is also why they talk about vaccine immunity - if a disease can't spread, it can't evolve nearly as fast.

Edit - think of it in terms of a zombie outbreak. If nobody is vaccinated, zombie outbreaks are common. If half the population is vaccinated, zombie outbreaks are still common. But if 99% of the population is vaccinated, zombie outbreaks simply don't happen because they can't bite an unvaccinated host in time.

This isn't an argument to blindly let the state inject your children with mystery syringes, but it's an argument you'll hear.

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[–] RedditisPropaganda31 [S] 1 point -1 points (+0|-1) ago 

So people who are not vaccinated by choice .... They are simply expressing free will in their actions ... and can not harm vaccinated people since vaccines work, right?

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[–] DeliciousOnions 0 points 1 point (+1|-0) ago 

I'm already at the edges of my knowledge on this issue but I tend to agree with you, that unless we start to see diseases evolving from their spread among the unvaccinated there's really no danger.

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[–] XSS1337 ago 

The Herd aspect protects those who cannot receive the vaccine, but when everyone refuses to vaccinate then the disease infects and potentially mutates into something much much much worse.

Kill yourself.... because when your kid kills an entire classroom , those parents are going to end your entire blood line.... A true holocaust..... with scalps for the accountants

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[–] phw 0 points 1 point (+1|-0) ago 

I think the idea is that vaccines aren't 100% effective. Say you have a measles vaccine that's theoretically 98% effective (number pulled from my ass, replace with the real one if you care enough to look it up). But even for the unlucky 2% of vaccinated people, they can still only catch measles from someone who has it, meaning they're 50 times more likely to catch it from an unvaccinated person than a vaccinated one.

  • The disease can spread freely among the unvaccinated population;
  • It can spread between an unvaccinated person and a vaccinated person only if the vaccination was ineffective (2%);
  • It can spread between two vaccinated people only if both vaccinations were ineffective (0.04%).

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[–] RedditisPropaganda31 [S] 1 point -1 points (+0|-1) ago 

Cool math