Big pHarma and their pro vax advocates are super keen to have you believe that vaccines were responsible for the dramatic fall in deaths from childhood infections whereas any plumber will tell you it was better drinking water and sewage handling. This graph should provide ample evidence of that to someone with an open mind to the truth but if the person you show it to protests, ask them at what point the Scarlet Fever vaccine was introduced? Spoiler, it is a trick question, there is no Scarlet Fever vaccine. Yet Scarlet Fever mortalities fell commensurate with other childhood infections.