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INFECTED UNVACCINATED
Herd immunity: How it works
vaccinated
0%
INFECTED UNVACCINATED
Herd immunity: How it works
vaccinated
0%
INFECTED UNVACCINATED VACCINATED
Herd immunity: How it works
vaccinated
50%
Herd immunity: How it works
INFECTED UNVACCINATED VACCINATED
vaccinated
50%
Herd immunity: How it works
vaccinated
100%*
NONEINFECTED VACCINATED
Herd immunity: How it works
Protected by the herd
*the % of population who need to be immune to ensure herd immunity varies by disease
NONEINFECTED VACCINATED
vaccinated
100%*

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