There is no credible scientific evidence that standard vaccines like flu shots or tetanus vaccines cause cancer. This conclusion is supported by extensive research from major medical institutions and peer-reviewed studies. https://www.quora.com/How-can-cancer-caused-by-normal-vaccinations-such-as-flu-and-tetanus-shots-be-prevented/answer/Coherent-Market-Insights-1?ch=10&oid=1477743863805292&share=6158e1b5&srid=uTm6RG&target_type=answer