1 in 8 cancer cases are caused by infections, global study finds
A new study published in The Lancet Oncology reveals that approximately 12% of global cancer cases are caused by infections from viruses, bacteria, or parasites. Researchers suggest that widespread vaccination and infection prevention could significantly reduce global cancer rates.
Why it matters
The findings underscore the critical role of preventative medicine and public health initiatives in reducing the global burden of cancer.
Four pathogens account for most infection-related cancers, a new study highlights, but the tools to prevent them range from well-established vaccines to treatments still under development.
By Anirban Mukhopadhyay Edited by Nicoletta Lanese , Laura Mondrag n Published 3 October 2026 In News When you purchase through links on our site, we may earn an affiliate commission. Here's how it works .
HPV (pictured) is responsible for a large proportion of infection-related cancers worldwide. (Image credit: KATERYNA KON/SCIENCE PHOTO LIBRARY via Getty Images) Copy link Facebook X Reddit Pinterest Flipboard Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter About 1 in 8 cancer cases are caused by infections with viruses, bacteria or parasites, a new study finds, suggesting that one of the most effective ways to reduce cancer rates might be to prevent common infections.
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