Genus: Phlebovirus Viral Example: Rift Valley Fever Virus General Characteristics: Most are transmitted by blood-sucking sand-flies Some, such as Rift Valley Fever Virus, can cause Hemorrhagic Fever Syndrome Ambisense Segment - one of Phlebovirus's three segments contains ambisense RNA. This means that the RNA segment has both coding and non-coding regions on the same segment. When transcribed, the new strand will also have coding and noncoding regions, but they will be inverted. Below is a picture of Rift Valley Fever Virus infecting tissue: