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Omsk hemorrhagic fever virus (OHF) is a tick-borne flavivirus endemic to Western Siberia. This virus is the only known tick-borne flavivirus to cause hemorrhagic disease in humans in the absence of encephalitis. OHF virus circulates within a small, defined niche in which other tick-borne complex flaviviruses are also present. The objectives of this study were to genetically classify OHF virus based...
Following a bite from an infected tick, tick-borne flaviviruses cause encephalitis, meningitis and hemorrhagic fever in humans. Although these viruses spend most of their time in the tick, little is known regarding the virus–vector interactions. We developed a simple method for synchronously infecting Ixodes scapularis larvae with Langat virus (LGTV) by immersion in media containing the virus. This...
Alteration of the blood-brain barrier (BBB) is a hallmark of tick-borne encephalitis (TBE), a life-threating human viral neuroinfection. However, the mechanism of BBB breakdown during TBE, as well as TBE virus (TBEV) entry into the brain is unclear. Here, primary human microvascular endothelial cells (HBMECs) were infected with TBEV to study interactions with the BBB. Although the number of infected...
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