What would happen if one generation of measles viruses never founds a host?

If one generation of measles viruses never founds a host, it would eventually die out. Measles is a highly contagious disease, and the virus is spread through contact with respiratory droplets from an infected person. If there are no infected people, the virus cannot be transmitted, and it will eventually die out.

This is what happened to smallpox, a disease that was once common throughout the world. The smallpox vaccine was developed in the 1790s, and it was so effective that smallpox was eradicated from the world by 1980. The last known case of smallpox occurred in 1977.

Measles is still a common disease in many parts of the world, but it is preventable with a vaccine. The measles vaccine is one of the most effective vaccines available, and it is recommended for all children.