Crosscut · 16 min
Viruses and Cancer
An accidental laboratory discovery proved that viruses can cause leukemia, revealing the exact biological link doctors now use to prevent tumors with a simple vaccine.
Opinion: 50 Years Ago, My Colleagues and I Pursued Basic Research Science That Became Revolutionary × Infections Are Causing Cancer, Finds New Research
Published 2026-10-11
0:00 / 16:18 · Narrator Sulafat/Charon/Vindemiatrix
In this episode
STAT News
Opinion: 50 Years Ago, My Colleagues and I Pursued Basic Research Science That Became Revolutionary
by Robert C. Gallo
Scroll.in
Infections Are Causing Cancer, Finds New Research
by John (Eddie) La Marca, The Conversation
The connection
Fifty years ago, a scientist trying to keep cells alive in a glass dish stumbled onto a surprise: a virus that could cause leukemia. That accidental discovery changed how medicine views disease. Something interesting emerges when pairing two new essays on this link between viruses and cancer. Writing for STAT News this week, Robert C. Gallo looks back at the trial and error that led to identifying that first cancer-causing human virus. Then, John (Eddie) La Marca brings the science up to the present. He lays out the exact steps a virus takes to mutate a cell, explaining how a simple vaccine can now block that process. Together, they connect a quiet laboratory accident directly to modern prevention.
Robert C. Gallo leaves you staring at a petri dish in the 1970s, watching human T cells divide for the first time. The realization that a virus could trigger leukemia was a total accident, a shock to researchers who thought human retroviruses didn't even exist. But turn the page to John (Eddie) La Marca, The Conversation, and that historical surprise becomes a massive, mechanical reality. La Marca looks at the sheer scale of this biological link today, pointing out that over two million new cancer cases a year start with an infection. What jumps out when you put these two together is the shift from mystery to precision. Gallo describes the messy, unpredictable nature of basic research—stumbling in the dark just to keep cells alive. Read alongside La Marca, that initial stumble opens up a clear, microscopic view of exactly how pathogens hack human cells. La Marca explains the exact mechanisms, like how a virus turns off a cell's self-destruct switch or inserts its own DNA. The interesting thing is how Gallo's defense of open-ended, unpredictable science ends up building the exact foundation La Marca relies on to argue that a huge percentage of global cancers are entirely preventable.
A strange result in a petri dish decades ago eventually becomes a quick injection in a doctor's office today. That shift from a laboratory accident to a life-saving vaccine feels almost miraculous. It takes a specific kind of patience to trace a microscopic invader all the way to a tumor, and then figure out how to block the path entirely. What lingers is the sheer unpredictability of scientific progress. If a random mistake can teach medicine how to stop cancer, what other accidental discoveries are sitting in labs right now, waiting to become tomorrow's cures?