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It isn't. It is comparable to the measles vaccine. Smallpox has a lot lower R-value which means the vaccine is very good at preventing outbreaks. A vaccinated
by bjoli 6y ago
It isn't. It is comparable to the measles vaccine. Smallpox has a lot lower R-value which means the vaccine is very good at preventing outbreaks.
A vaccinated individual will also have milder symptoms.
Together with how rare adverse reactions are to the vaccination, the smallpox vaccine is really a wonder.
- robbiep 6y agoThat’s not really true about smallpox - it’s R is somewhere between 5-8, SARS-CoV-2 is about 2.5. Higher R0 means you need a greater percentage vaccinated population to achieve herd immunity