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Oct 16, 2023 · What causes West Nile virus? West Nile is an arbovirus, or a virus you get from an arthropod (arthropods are a large group that includes insects). It’s an RNA virus in the genus Flavivirus. Similar viruses cause dengue fever, yellow fever and Zika.
The West Nile virus virion is an icosahedral particle with the capsid protein associating with the RNA genome to form the nucleocapsid, which is surrounded by a lipid bilayer. A high proportion of capsid protein localizes to the nucleus, while viral assembly takes place in the cytoplasm, with budding in the endoplasmic reticulum (ER) (17, 41, 183).
Some of the mosquitoes-transmitted viruses include: Yellow Fever, Dengue Fever, Japanese encephalitis, West Nile viruses, and Zika virus. Other Flaviviruses are transmitted by ticks and are responsible of encephalitis and hemorrhagic diseases: Kyasanur Forest Disease (KFD) and Alkhurma disease, and Omsk hemorrhagic fever.
Aug 1, 2001 · Keywords: West Nile virus, YF 17D virus recombinant, West Nile vaccine, RNA virus vectors. Yellow fever (YF) virus is a positive-strand RNA virus widely used as an attenuated live-virus vaccine. Other RNA live-virus vaccines include measles, mumps, rubella and poliovirus, all of which have been in use for many years with remarkable safety and ...
Jan 24, 2023 · West Nile meningitis is a condition in which the virus causes the inflammation of the meninges, the three membranes that surround and encase the brain and spinal cord. While meningitis can cause many of the same physical symptoms of West Nile encephalitis, it doesn't typically alter a person's behavior or personality, or cause confusion.
Febrile illness (fever) in some people. About 1 in 5 people who are infected develop a fever with other symptoms such as headache, body aches, joint pains, vomiting, diarrhea, or rash. Most people with febrile illness due to West Nile virus recover completely, but fatigue and weakness can last for weeks or months. Serious symptoms in a few people.
Yellow fever and dengue viruses, with mosquito vectors similar to West Nile and Zika viruses, are endemic in many tropical areas of the world and produce frequent outbreaks. The global distribution of yellow fever and dengue viruses could also change and has great potential to do so.
