Brain Tumors Not Caused by Viruses

With an estimated one in five cancers caused by an infectious agent, either bacterial or viral, the findings from a recent study are significant: According to a recent genetic analysis of more than 4,000 tumors that maps the linkages between viruses and 19 different types of cancer, brain tumors and breast cancer are not caused by viruses. Previous studies have suggested links between breast cancer and Epstein-Barr virus and between brain tumors and cytomegalovirus, but the new study disproves those associations. To learn more about the study, click here.