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Lassa fever, also known as Lassa hemorrhagic fever, is a type of viral hemorrhagic fever caused by the Lassa virus. [1] Many of those infected by the virus do not develop symptoms . [ 1 ] When symptoms occur they typically include fever , weakness, headaches, vomiting , and muscle pains . [ 1 ]
Lassa virus life cycle. Figure by Fehling et al., 2012 [13] The life cycle of Lassa mammarenavirus is similar to the Old World arenaviruses. Lassa mammarenavirus enters the cell by the receptor-mediated endocytosis. Which endocytotic pathway is used is not known yet, but at least the cellular entry is sensitive to cholesterol depletion.
An arenavirus is a bi- or trisegmented ambisense RNA virus that is a member of the family Arenaviridae. [1] [2] These viruses infect rodents and occasionally humans.A class of novel, highly divergent arenaviruses, properly known as reptarenaviruses, have also been discovered which infect snakes to produce inclusion body disease, mostly in boa constrictors.
Lassa fever is "an acute viral hemorrhagic illness caused by Lassa virus," according to the World Health Organization. "Lassa fever is a potentially life-threatening viral disease," Dr. Albert Ko ...
The family Arenaviridae include the viruses responsible for Lassa fever (Lassa virus), Lujo virus, Argentine (Junin virus), Bolivian (Machupo virus), Brazilian (Sabiá virus), Chapare hemorrhagic fever (Chapare virus), Venezuelan (Guanarito virus) and Whitewater Arroyo virus hemorrhagic fevers. The former family Bunyaviridae includes
Cap-snatching also explains why some viral mRNA have 5’ terminal extensions of 10-20 nucleotides that are not encoded for in the genome. Examples of viruses that engage in cap-snatching include influenza viruses (Orthomyxoviridae), Lassa virus (Arenaviridae), hantaan virus (Hantaviridae) and rift valley fever virus (Phenuiviridae).
Viral replication is the formation of biological viruses during the infection process in the target host cells. Viruses must first get into the cell before viral replication can occur. Through the generation of abundant copies of its genome and packaging these copies, the virus continues infecting new hosts. Replication between viruses is ...
Genome type and replication cycle of different RNA viruses. RNA viruses in Orthornavirae typically do not encode many proteins, but most positive-sense, single-stranded (+ssRNA) viruses and some double-stranded RNA (dsRNA) viruses encode a major capsid protein that has a single jelly roll fold, so named because the folded structure of the protein contains a structure that resembles a jelly ...