Why is it called Orthomyxovirus?
The family Orthomyxoviridae comprises the genera Influenzavirus A, Influenzavirus B, Influenzavirus C, Thogotovirus, Quaranjavirus, and Isavirus. The name of the family is derived from the Greek myxa, meaning mucus, and orthos, meaning correct or right.
What is meant by Orthomyxovirus?
: any of a family (Orthomyxoviridae) of single-stranded RNA viruses that have a spherical or filamentous virion with numerous surface projections of glycoprotein and include the causative agents of influenza.
What are the characteristics of Orthomyxovirus?
orthomyxovirus, any virus belonging to the family Orthomyxoviridae. Orthomyxoviruses have enveloped virions (virus particles) that measure between 80 and 120 nm (1 nm = 10−9 metre) in diameter. The nucleocapsid, which consists of a protein shell, or capsid, and contains the viral nucleic acids, has helical symmetry.
How is orthomyxoviridae transmitted?
Typically, influenza is transmitted from infected mammals through the air by coughs or sneezes, creating aerosols containing the virus, and from infected birds through their droppings. Influenza can also be transmitted by saliva, nasal secretions, feces and blood.
What disease does orthomyxoviridae cause?
The orthomyxoviruses (influenza viruses) constitute the genus Orthomyxovirus, which consists of three types (species): A, B, and C. These viruses cause influenza, an acute respiratory disease with prominent systemic symptoms.
Is Orthomyxoviridae a pathogen?
The family Orthomyxoviridae contains significant pathogens of humans and animals. Virions are spherical to filamentous, about 100 nm in diameter. Genomes are segmented, single-stranded negative-strand RNA.
What diseases does Orthomyxoviridae cause?
Why does influenza replicate in nucleus?
The influenza virus has a negative sense RNA genome. In order to replicate, this means that the virus must first produce positive sense mRNA in order to produce necessary enzymes. Once the enzymes are translated, replication can take place.
How is Orthomyxoviridae transmitted?
What are the symptoms Orthomyxoviridae?
Clinical Manifestation Headache, chills, fever, malaise, myalgias, anorexia, and sore throat appear suddenly. The fever rapidly climbs to 101 to 104°F (38.3 to 40.0°C), and respiratory symptoms ensue. A nonproductive cough is characteristic. Sneezing, rhinorrhea, and nasal obstruction are common.