Omsk hemorrhagic fever

Omsk hemorrhagic fever is a viral hemorrhagic fever caused by Omsk hemorrhagic fever virus, a tick-borne flavivirus genetically close to tick-borne encephalitis virus but clinically characterized by fatal hemorrhagic fever instead of encephalitis ^[1][2].

The disease manifests as a hemorrhagic fever, in contrast to the encephalitis seen with related tick-borne flaviviruses ^[1][2].

Omsk hemorrhagic fever virus is recognized as a tick-borne flavivirus with a current epidemiological role alongside related hemorrhagic fever viruses, though the manifest does not supply case counts or geographic distribution for this specific disease ^[1][2]. It is grouped with other tick-borne flaviviruses occurring in Europe and Asia ^[1][2].

Omsk hemorrhagic fever virus is transmitted by ticks as a tick-borne flavivirus, consistent with its classification within the tick-borne flavivirus group ^[1][2]. No specific vector species or exposure mechanisms beyond tick-borne transmission are detailed in the evidence ^[1][2].

The available evidence discusses vaccination history and modern vaccine development trends only for tick-borne encephalitis, not for Omsk hemorrhagic fever, so no preventive measures specific to this disease are supported ^[1][2]. General tick-borne flavivirus control context is limited to the encephalitis vaccine narrative ^[1][2].

1. 1 Gritsun TS et al. Tick-borne flaviviruses. Adv Virus Res. 2003. PMID: 14714436. doi: 10.1016/s0065-3527(03)61008-0. PubMed: https://pubmed.ncbi.nlm.nih.gov/14714436/
2. 2 Gritsun TS et al. Tick-borne encephalitis. Antiviral Res. 2003 Jan. PMID: 12615309. doi: 10.1016/s0166-3542(02)00206-1. PubMed: https://pubmed.ncbi.nlm.nih.gov/12615309/