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Viral Infections May Trigger Lung Cancer Years Later
11 Mar
Summary
- Severe viral infections can reprogram lung immune cells, aiding tumor growth.
- COVID-19 and flu vaccines may prevent these harmful cancer-promoting changes.
- Doctors should monitor patients recovering from severe respiratory viral infections.
Serious viral infections such as COVID-19 and influenza can significantly increase the risk of developing lung cancer, potentially years or even months after recovery. A study from the University of Virginia School of Medicine revealed that these infections can 'reprogram' immune cells within the lungs, fostering an environment conducive to tumor growth. This reprogramming leads to a persistent inflammatory state that makes the lungs more susceptible to cancer.
The research, conducted on both mice and human patients, showed a notable link between severe COVID-19 hospitalization and subsequent lung cancer development, regardless of smoking status or other health conditions. Interestingly, milder COVID-19 cases did not appear to increase this risk.
Encouragingly, vaccination against COVID-19 and flu has been suggested to largely prevent these harmful, cancer-promoting immune cell alterations in the lungs. This finding offers a potential preventative strategy against the long-term consequences of severe respiratory viral infections.
Scientists are urging healthcare providers to remain vigilant and closely monitor patients who have experienced severe bouts of COVID-19, flu, or pneumonia. This proactive approach could facilitate the early detection of lung cancer, a disease often diagnosed at advanced stages when treatment is more challenging.
