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It's not how all vaccines work. But some do. For example we basically eradicated smallpox meaning that the resulting immunity will neutralize any virus when i
by refurb 4y ago
It's not how all vaccines work. But some do.
For example we basically eradicated smallpox meaning that the resulting immunity will neutralize any virus when it enters the body preventing infection.
- nicolas_t 4y agoEven the smallpox vaccine had only 95% effectiveness. It turns out that 95% effectiveness, herd immunity and the fact that smallpox is a DNA virus with low mutation rate (RNA viruses like covid19 have much higher mutation rate and as such a lot more variants reducing effectiveness of any given vaccine over time) was enough to eradicate Smallpox. But that doesn't mean that the vaccine was 100% effective, as an other poster pointed out, some vaccinated children still got infected with small but the vaccine reduced the risk drastically https://daraj.com/wp-content/uploads/2021/04/5a2b8126-e638-49be-8f0a-b222fb74215d.jpg https://daraj.com/wp-content/uploads/2021/04/5a2b8126-e638-4...
- refurb 4y agoYou’re making a different point. Vaccines can be sterilizing (preventing infection) or non-sterilizing (reducing disease severity). Regardless, no vaccine works in 100% of all people who receive it.