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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.
Viruses and other infections that cause cancer are more prevalent in developing countries where 1 of 4 cases can be linked to infections. Contrast this with developed countries where only 1 of 10 cases can be linked to viruses and infection.Radiation is also considered to be a cancer risk factor.iruses and other infections that cause cancer are more prevalent in developing countries where 1 of 4 cases can be linked to infections. Contrast this with developed countries where only 1 of 10 cases can be linked to viruses and infection.