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TFA: "Herd immunity occurs when a few unvaccinated children are protected by the fact that almost everyone around is vaccinated and therefore cannot infect them
by kscaldef 14y ago
TFA: "Herd immunity occurs when a few unvaccinated children are protected by the fact that almost everyone around is vaccinated and therefore cannot infect them. It's important for those for whom vaccines have not worked, those who have immune problems, or those who cannot be vaccinated due to specific health risks"
- sliverstorm 14y agoAdditionally, vaccines are not 100% effective- think of them as conferring greatly improved resistance, rather than total immunity. Herd immunity helps add that last few %.