Which viruses are flaviviruses?

The Flaviviridae is a family of arthropod-borne, enveloped, RNA viruses that contain important human pathogens such as yellow fever (YF), Japanese encephalitis (JE), tick-borne encephalitis (TBE), West Nile (WN), and the dengue (DEN) viruses.

Why is it called the flavivirus?

Flaviviruses are named for the yellow fever virus; the word flavus means ‘yellow’ in Latin, and yellow fever in turn is named from its propensity to cause yellow jaundice in victims….

Genus: Flavivirus
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How do flaviviruses work?

Flaviviruses are enveloped viruses, which enter their host cells through a process of receptor-mediated endocytosis and subsequent fusion from within the endosomal cell compartment. This fusion process is triggered by the mildly acidic pH within the lumen of the endosome [4].

What is the meaning of Flaviviridae?

Flaviviridae: A family of viruses transmitted by mosquitos and ticks that cause some important diseases, including dengue, yellow fever, tick-borne encephalitis virus, and West Nile fever. The flaviviruses are positive-strand RNA viruses containing three structural proteins and a host-derived lipid bilayer.

Is dengue an alphavirus?

Although caused by the same viruses, dengue and dengue hemorrhagic fever are pathogenetically, clinically, and epidemiologically distinct. Dengue viruses appear to replicate in macrophages at the site of the mosquito bite, in regional lymph nodes, and then throughout the reticuloendothelial system.

What is the most common Flavivirus infection in the United States?

The 4 most common species causing human disease include the Japanese encephalitis virus (JEV), Murray Valley encephalitis virus (MVEV), St. Louis encephalitis virus (SLEV), and the West Nile virus (WNV). The latter 2 viruses are the only known Flaviviridae that are endemic in the continental United States.

Is dengue a Flavivirus?

The dengue viruses are members of the genus Flavivirus in the family Flaviviridae. Along with the dengue virus, this genus also includes a number of other viruses transmitted by mosquitoes and ticks that are responsible for human diseases.

How do you stop Flavivirus?

Flaviviral infection can be prevented by avoiding exposure to the arthropods that transmit these viruses. Personal protective strategies include wearing repellent, staying in screened or air-conditioned dwellings, and avoiding outdoor activities during times when the vectors are most avidly seeking blood meals.

Where is dengue most common in the world?

The disease is common in many popular tourist destinations in the Caribbean (including Puerto Rico), Central and South America, Southeast Asia, and the Pacific Islands. In the United States, local cases and limited spread of dengue does occur periodically in some states with hot, humid climates and Aedes mosquitoes.

Which disease is caused by alphavirus?

Pathogenesis and immune response

Virus Human Disease Distribution
Chikungunya virus Rash, arthritis Africa, Latin America, India, SE Asia
Eastern equine encephalitis virus Encephalitis Americas
Mayaro virus Rash, arthritis South America
O’nyong’nyong virus Rash, arthritis Africa

Where is Flavivirus most common?

Importantly, infections with flaviviruses are the most prevalent viral infections worldwide, however their impact on public health, are less appreciated than other viral diseases, partly because the most affected are developing countries in Africa and Southeast Asia.

Is Ebola a Flavivirus?

Flaviviruses, including Zika and Dengue viruses, and Filoviruses, including Ebola and Marburg viruses, are significant global public health threats.

How is the word flavivirus used in a sentence?

Definition of flavivirus : any of a family (Flaviviridae and especially genus Flavivirus) of single-stranded RNA viruses transmitted especially by ticks and mosquitoes and including the causative agents of dengue, hepatitis C, hog cholera, Saint Louis encephalitis, West Nile virus, and yellow fever Examples of flavivirus in a Sentence

What kind of diseases are caused by flavivirus?

The flavivirus family includes a number of dangerous insect-borne diseases such as dengue, West Nile, yellow fever, and tick-borne and St. The Abbott team’s evidence suggested that the viruses belong to the Flavivirus genus, which includes the viruses that cause hepatitis C, yellow fever, and dengue.

Is the Zika virus part of the flavivirus family?

Recent Examples on the Web Zika virus is a flavivirus, part of the same family as yellow fever, West Nile, chikungunya and dengue fever. — Cnn Editorial Research, CNN, 27 May 2021 Yellow fever, a flavivirus, has parallels to SARS-CoV-2, the novel coronavirus that causes COVID.

What makes a flavivirus different from other RNA viruses?

Flaviviruses share several common aspects: common size (40–65 nm), symmetry ( enveloped, icosahedral nucleocapsid ), nucleic acid ( positive-sense, single-stranded RNA around 10,000–11,000 bases), and appearance under the electron microscope .