Do viruses cause cancer?

Viruses and Cancer. Ordinary cold viruses, gastroenteroviruses and such are not cancer promoters. Some viruses - such as the human papilloma virus (hpv), and some others, are linked to human cancer, but they require promoters and other conditions to be present, so as long as you get screened regularly (pap smear, mammogram, colonoscopy in your 50's, etc., your doctor can detect any abnormalities early enough.
Yes. Many viruses cause cancer. Human papilloma virus (hpv) causes cervical cancer and some oral cancers. Epstein barr virus (ebv) is linked to nasopharynx cancer and hodgkins lymphoma. The hepatitis b and hepatitis c viruses are strongly linked to development of liver cancer.