Which is an example of ARNA virus?
They include Chapare virus, a severe or fatal hemorrhagic fever, found in Bolivia, as well as Guanarito virus found in Venezuela. Old World viruses occur in the Eastern Hemisphere — Africa, Europe, and Asia. Lassa fever, which can cause mild to severe disease in people, is found in West Africa.
What disease does arenavirus cause?
Arenaviruses cause diseases with two types of clinical presentations: neurological and hemorrhagic fever. However, asymptomatic arenavirus infection may occur. Neurological: aseptic meningitis, encephalitis or meningoencephalitis, caused by the LCM virus. Overall case fatality is <1%.
Is Arenaviridae enveloped?
Summary. Members of the family Arenaviridae produce enveloped virions containing genomes consisting of 2 to 3 single-stranded RNA segments totaling about 10.5 kb (Table 1. Arenaviridae). Arenaviruses are currently classified into four genera (Antennavirus, Hartmanivirus, Mammarenavirus, and Reptarenavirus).
What are the families of viruses?
DNA viruses
| Virus family | Examples (common names) | Group |
|---|---|---|
| 1. Adenoviridae | Canine hepatitis virus, Some types of the common cold | I |
| 2. Papovaviridae | JC virus, HPV | I |
| 3. Parvoviridae | Human parvovirus B19, canine parvovirus | II |
| 4. Herpesviridae | Herpes simplex virus, varicella-zoster virus, cytomegalovirus, Epstein–Barr virus | I |
Is Ebola an arenavirus?
They found the culprit – a previously undescribed arenavirus – and uncovered something surprising: the Arenavirus’s glycoprotein, a viral “access badge” to the secure insides of a cell, actually belonged to the Ebola virus.
How many Filoviruses are there?
Six out of the 12 filoviruses are known to cause disease in humans. Further studies are, however, needed to determine the pathogenicity of the newly discovered member of the Ebolavirus genus, BOMV, and the only member of the Dianlovirus genus, MLAV.
How do you treat arenavirus?
What is the treatment? There is no specific treatment for most of these illnesses. Some of the illnesses, such as Lassa fever, respond to anti-viral therapies if they are treated during the first week of illness. Supportive therapy, including managing secondary bacterial infections, may also help reduce mortality.
What kind of virus is arenavirus?
An arenavirus is a bisegmented ambisense RNA virus that is a member of the family Arenaviridae. 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.
Is Arenaviridae segmented?
Arenaviruses have a segmented RNA genome that consists of two single-stranded ambisense RNAs. As with all negative-sense RNA viruses, the genomic RNA alone is not infectious and the viral replication machinery is required to initiate infection within a host cell.
What causes bunyavirus?
The Bunyaviridae are divided into arthropod-borne viruses (arboviruses) and rodent-borne viruses (roboviruses). Bunyaviruses cause several diseases of human and domestic animals, including fever, hemorrhagic fever, renal failure, encephalitis, meningitis, blindness, and, in domestic animals, congenital defects.