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View full size image. Viruses may be causing more cancers than previously thought, according to a new study. Scientists know that a few cancers, such as cervical cancer, are caused by viruses, because researchers have isolated the viral genomes from the cancerous cells. But some viruses may take a hit and run approach â inducing cancer and then vanishing before the disease is caught, the researchers say.
Some of these factors include the host's genetic makeup, mutation occurrence, exposure to cancer causing agents, and immune impairment. Viruses typically initiate cancer development by suppressing the host's immune system, causing inflammation over a long period of time, or by altering host genes.NA Viruses. 1  The Epstein-Barr virus has been linked to Burkitt's lymphoma. 2  The hepatitis B virus has been linked to liver cancer in people with chronic infections. 3  Human papilloma viruses have been linked to cervical cancer. 4  Human herpes virus-8 has been linked to the development of Kaposi sarcoma.