Some cancers are preventable with a vaccine - a virologist explains
One-fifth. Nearly 20% of cancers worldwide are caused by a virus.
These viruses don't cause cancer until long after they initially
infect a person. Rather, the viruses teach the cells they take over
how to escape the natural biological process of cell death. This
strategy sets these altered cells on a path for other genetic changes
that can cause full-blown cancer years down the road.
https://sports.yahoo.com/cancers-preventable-vaccine-virologist-explains-201901105.html
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