Five families of RNA viruses have been recognised as being able to cause<unk>  fevers. * The order Bunyavirales includes the families Arenaviridae, Fimoviridae, and all members of the former family Bunyaviridae, especially Peribunyaviridae. :* The family Arenaviridae include the viruses responsible for Lassa fever (Lassa virus), Lujo virus, Argentine (Junin virus), Bolivian (Machupo virus), Brazilian (Sabiá virus), Chapare<unk>  fever (Chapare virus), Venezuelan (Guanarito virus) and Whitewater Arroyo virus<unk>  fevers. :* The former family Bunyaviridae includes ::* the causative agents of Hantavirus<unk>  fever with renal syndrome (HV-HFRS) (Hantaviridae), ::* the Crimean-Congo<unk>  fever (CCHF) virus from the genus Orthonairovirus (Nairoviridae), ::* Garissa virus and Ilesha virus from the genus Orthobunyavirus (Peribunyaviridae), and ::* the Rift Valley fever (RVF) virus from the genus Phlebovirus (Phenuiviridae). * The family Filoviridae (order Monomegavirales) includes Ebola virus and Marburg virus. * The family Flaviviridae (order Amarillovirales) includes dengue, yellow fever, and two viruses in the tick-borne encephalitis group that cause<unk> : Omsk<unk>  fever virus and Kyasanur Forest disease virus. * The family Togaviridae (order Martellivirales) includes Chikungunya virus which causes Chikungunya fever. * Family Rhabdoviridae (order Mononegavirales): In September 2012 scientists writing in the journal PLOS Pathogens reported the isolation of a member of the Rhabdoviridae responsible for 2 fatal and 2 non-fatal cases of<unk>  fever in the Bas-Congo district of the Democratic Republic of Congo. The virus was named Bas-Congo virus. The non-fatal cases occurred in healthcare workers involved in the treatment of the other two, suggesting the possibility of person-to-person transmission. This virus is related to the Ephemerovirus and Tibrovirus genera. The pathogen that caused the cocoliztli epidemics in Mexico of 1545 and 1576 is still unknown, and the 1545 epidemic may have been bacterial rather than<unk> .
Viral hemorrhagic fever
Omsk hemorrhagic fever
Bolivian hemorrhagic fever
Argentine hemorrhagic fever
Crimean–Congo hemorrhagic fever
Brain fever
Dengue fever
Blackwater fever