Academic Paper from the year 2018 in the subject Biology - Virology, grade: A-, Kenyatta University, language: English, abstract: Since the avian cancer virus experiment in 2011, scientists have confirmed seven different viruses that cause about ten to fifteen percent of human cancer globally. Notably, these distinct viruses have revealed unprecedented links between innate immunities as well as sensors and tumour suppressors, implying that they control both cancer and viral infections. Apparently, these varied cancers remain to be a substantial health challenge, especially in developing economies, alongside the underserved and immuno-suppressed individuals in developed economies. Among the several human tumour viruses evidenced by several scientists and scholars, this paper will explore the Epstein-Barr virus (EBV), the Hepatitis B virus (HBV) and the Human papilloma virus (HPV) along with their distinct ways by which they cause tumours.