Febrile infectious childhood diseases (FICDs) are associated with a lower cancer risk in adulthood.
A Swiss study found that adults are significantly protected against non-breast cancers — genital, prostate, gastrointestinal, skin, lung, ear-nose-throat, and others — if they contracted measles (odds ratio, OR = 0.45), rubella (OR = 0.38) or chickenpox (OR = 0.62) earlier in life:
https://www.ncbi.nlm.nih.gov/m/pubmed/9824838/
Chicken pox and reduced rates of brain cancer in adulthood:
https://www.bcm.edu/news/cancer/chicken-pox-may-reduce-risk-of-brain-cancer
Mumps and reduced rates of ovarian cancer:
https://link.springer.com/article/10.1007/s10552-010-9546-1
Measles and reduced risk of lymphomas
https://physiciansforinformedconsent.org/measles/dis/
And on the contrary….both the MMR (measles, mumps and rubella) and chicken pox vaccine contain human DNA which has been linked to childhood cancers like leukemia and lymphoma, autoimmune diseases and gender identify confusion….
https://www.facebook.com/marcellaterry/posts/10214742184256064