These graphs compiled from government data provide more evidence that vaccines did not save mankind from disease. Historical data confirms engineering accomplished that goal through improved living conditions. Early 20th century America experienced substantial improved living conditions (i.e., decreased crowding in cities, improved plumbing, refrigerated food, advanced water filtration, solid waste disposal), which caused America to experience a rapid decline...
Numerical proofs
Crude Death Rate for Infectious Diseases U.S., 1900-1996
Notice how this chart confirms that declines in mortality (i.e., less Americans dying) coincided with improvements in engineering, not vaccines....