Infections Responsible for Nearly 12% of New Cancer Cases, WHO Reports
Recent WHO report highlights the link between infections and cancer, stressing the importance of vaccines and early treatments.
A recent analysis by the World Health Organization’s International Agency for Research on Cancer (IARC) reveals that almost 12% of newly diagnosed cancer cases in 2024 are related to infections. This finding stresses the critical need for vaccination, timely medical interventions, and overall cancer prevention strategies.
Infection's Role in Cancer Development
Published in the journal The Lancet Oncology, the report takes a deep dive into the relationship between certain bacterial and viral infections and the onset of various cancers worldwide. Researchers highlight that preventing and effectively treating these infections could significantly reduce the incidence of several malignancies.
Key Infections Linked to Cancer
- Human Papillomavirus (HPV): This virus is implicated in about 4% of new cancer cases. It is primarily responsible for cervical cancer and contributes to specific head and neck cancers.
- Helicobacter Pylori: Associated with nearly 4% of all new cancer diagnoses, this stomach bacterium is largely linked to gastric cancer.
- Hepatitis B and C: These viral infections play a role in liver cancer, responsible for approximately 2% and less than 1% of new cases, respectively.
- Epstein-Barr Virus (EBV): Affecting over 90% of people globally, EBV is connected to nearly 1% of new cancer diagnoses, including certain types of lymphomas and stomach cancers.
Understanding the Risk
It’s crucial to note that having an infection doesn’t guarantee the development of cancer. The risk varies based on individual factors, and cancers related to infections often take years, if not decades, to manifest.
Prevention and Future Directions
Preventative measures are paramount in combating these cancer-linked infections. Vaccines such as those for HPV and hepatitis B offer protection against certain cancer-related infections. Additionally, the eradication of H. pylori through antibiotics has been shown to significantly lower gastric cancer risks.
For individuals infected with HIV, effective treatment can greatly reduce cancer risks associated with the immune system's suppression. However, not all infections mentioned in the report currently have available vaccines.
Researchers are actively looking into potential vaccines for Epstein-Barr virus, with several candidates either in development or undergoing clinical trials.
The findings from this report are intended to inspire greater investment in vaccine research, treatment options, and preventive measures, ultimately aiming to decrease the incidence of infection-associated cancers around the globe.
