Most medical doctors and health groups agree that the use of vaccines has reduced disease infection rates. However, there are some people who are against vaccines. They question the ethics and safety of giving vaccinations to large groups. Those who support vaccination programs say that vaccines have stopped more deaths than any other medical program. For example, vaccines played an important role in getting rid of smallpox worldwide. The polio virus was almost wiped out due to vaccinations. Avoiding vaccinations can also have dangerous results. The lack of vaccination, for example, led to a recent outbreak of measles in india. Indian parent previously did not allow their children to receive vaccines.