METHODS: We explored the co prevalence of high risk HPVs and EBV in 378 males and only 7 females blood donors of different nationalities mainly from Qatar, Egypt, Syria, Jordan, Pakistan, and India residing in Qatar, using polymerase chain reaction PCR . ...On the other hand, it is important to highlight that these oncoviruses can also be co present in several types of human cancers where they can cooperate in the initiation and or progression of these cancers. ...