If it is true that...

In the early 1900s, there were about 10,000 Americans a year who died from measles and mumps

and

By 1964, there were about 300-400 Americans who died from measles and mumps, and almost all were severely malnourished kids

and

Before the poverty program, there were a lot of starving children in America

Then it must be true that...

The deaths from measles and mumps can largely be attributed to malnutrition