Modern medicine that heals people.
An example is the development and use of vaccines. In the past, people got very sick and or died from diseases like polio, smallpox, and measles. Vaccines were used and nearly wiped out all those diseases. They have saved many lives.
An example is the development and use of vaccines. in the past, people got very sick and dies from diseases like polio, small pox,, and measles. Vaccines have nearly wiped out all those diseases and saved many lives.