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Do remember that the current flu vaccine (as an example) has an efficacy rate of less than 65%. So even if 100% of the population were vaccinated, herd immunity
by patrickgzill 14y ago
Do remember that the current flu vaccine (as an example) has an efficacy rate of less than 65%. So even if 100% of the population were vaccinated, herd immunity would not be possible.
Herd immunity requires about 75% + efficacy of the vaccines (and assuming 100% of the target population is vaccinated), from what I can understand (it varies based on how the disease being vaccinated against, is spread).
There are vaccines being sold and marketed, that have efficacy rates as low as 35%.
- patmcguire 14y agoIs efficacy binary? A partially protected person could spread less and recover more quickly than someone who isn't protected. I'm not sure enough of the math to know whether 100% of people being 65% protected works the same as 65% of the people being 100% protected, but it might not be.
- fnordfnordfnord 14y agoIt may not be, but I think that is the way it is modeled.
- tedunangst 14y agoMostly binary. The flu vaccine protects ~99% against some strains and 0% against others.