Cancer was practically unknown until compulsory vaccination with cowpox vaccine began to be introduced

"Cancer was practically unknown until compulsory vaccination with cowpox vaccine began to be introduced.
I have had to deal with at least two hundred cases of cancer, and I never saw a case of cancer in an unvaccinated person."
Dr. W.B. Clark of Indiana 1936
A hundred years ago less than 1 in 1000 people died of cancer.
According to the World Health Organization Cancer is a leading cause of death worldwide and accounted for 7.6 million deaths (around 13% of all deaths) in 2008.
https://www.curezone.org/ig/i.asp?i=123387