What this page does and does not yet contain. This is the taxonomy pass. Every virus below carries its ICTV classification and the evidence that it infects people. Vaccines, antivirals, antibodies and disease-burden figures have not been searched yet — that is why the last column says so, rather than being blank or saying “none”. An empty cell would claim that nothing exists; this claims only that nobody has looked.
Taxonomy is copied by script from the ICTV Virus Metadata Resource and is never hand-edited. How a virus qualifies for this list, and which viruses are deliberately left out, is on the methods page.
Where this family sits
Ranks above family are shared by every member, copied from ICTV MSL41.v1 / VMR_MSL41.v1.20260729.xlsx.
| Realm | Riboviria |
|---|---|
| Kingdom | Orthornavirae |
| Phylum | Kitrinoviricota |
| Class | Flasuviricetes |
| Order | Amarillovirales |
| Family | Flaviviridae |
Genome type in this family: IV — (+)ssRNA.
Members with evidence of human infection
14 of this family’s species qualify for the index. Species with no human sequence evidence, and the commensal families left out altogether, are explained on the methods page.
| Virus | Family | Baltimore class | ICTV species | Human infection | Countermeasures |
|---|---|---|---|---|---|
| Dengue virusDENV-2; DENV-1; DENV-3; DENV-4 | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus denguei | Human infection recorded; pattern not classified | Vaccine: Approved |
| Ilhéus virusILHV; ROCV; Rocio virus; Orthoflavivirus ilheusense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus ilheusense | Human infection recorded; pattern not classified | Not searched yet |
| Japanese encephalitis virusJEV; Orthoflavivirus japonicum | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus japonicum | Human infection recorded; pattern not classified | Vaccine: all 1 discontinued |
| Jīngmén tick virusJMTV; Jingmenvirus rhipicephali | Flaviviridae | IV — (+)ssRNA | Jingmenvirus rhipicephali | Human infection recorded; pattern not classified | Not searched yet |
| Kyasanur Forest disease virusKFDV; AHFV; Alkhumra hemorrhagic fever virus; Orthoflavivirus kyasanurense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus kyasanurense | Human infection recorded; pattern not classified | Not searched yet |
| Murray Valley encephalitis virusMVEV; ALFV; Alfuy virus; Orthoflavivirus murrayense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus murrayense | Human infection recorded; pattern not classified | Not searched yet |
| Omsk hemorrhagic fever virusOHFV; Orthoflavivirus omskense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus omskense | Human infection recorded; pattern not classified | Not searched yet |
| Powassan virusPOWV; DTV; deer tick virus; Orthoflavivirus powassanense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus powassanense | Human infection recorded; pattern not classified | Not searched yet |
| St. Louis encephalitis virusSLEV; Orthoflavivirus louisense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus louisense | Human infection recorded; pattern not classified | Not searched yet |
| Usutu virusUSUV; Orthoflavivirus usutuense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus usutuense | Human infection recorded; pattern not classified | Not searched yet |
| Wesselsbron virusWESSV; Orthoflavivirus wesselsbronense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus wesselsbronense | Human infection recorded; pattern not classified | Not searched yet |
| West Nile virusWNV; KUNV; Kunjin virus; Orthoflavivirus nilense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus nilense | Human infection recorded; pattern not classified | Not searched yet |
| Yellow fever virusYFV; Orthoflavivirus flavi | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus flavi | Human infection recorded; pattern not classified | Vaccine: Phase 3 |
| Zika virusZIKV; Orthoflavivirus zikaense | Flaviviridae | IV — (+)ssRNA | Orthoflavivirus zikaense | Human infection recorded; pattern not classified | Vaccine: all 1 discontinued |
Countermeasures across this family
Vaccines, antivirals and antibodies have not been searched for this family yet. When they are, this section will carry the family-level summary that makes broad-spectrum candidates visible. It is empty because the work is outstanding, not because nothing exists.