Ekpoma virus

Orphan RNA viruses in humans

Ekpoma viruses, including Ekpoma 1 tibrovirus (EKV-1) and Ekpoma 2 tibrovirus (EKV-2), are orphan viruses not associated with any disease. They are negative-sense RNA viruses and members of the rhabdovirus family. Both viruses were discovered in 2015 in blood samples collected from two healthy women living in Ekpoma, Nigeria. EKV-2 appears to be widespread and ~45% of people living in and around Ekpoma have been previously exposed. Both viruses have very broad cellular tropism and the ability to infect a wide range of human cancer cell lines. Neither virus has been isolated, hindering research.

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