Most americans born before 1970 have a permanent scar on their shoulders from the smallpox vaccine. Why don't younger americans

Question

Darina [25.2K]

3 years ago

8

Most americans born before 1970 have a permanent scar on their shoulders from the smallpox vaccine. Why don't younger americans

have one?

Social Studies

1 answer:

Ivanshal [37] · Answer 1 · 2021-12-16T21:36:01+03:00

I believe the answer is: Smallpox has been eradicated by a worldwide vaccination program

Vaccines develop an immunity toward the virus. In order to survive, virus need to obtain a host so they could replicate. Due to the vaccine, the viruses cannot find these hosts. Because of this, smallpox virus started to gradually decreased and eventually eradicated.