What diseases does orthomyxoviruses 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.
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.
What family is the flu in?
Influenza viruses are members of the Orthomyxoviridae family of viruses. Three genera cause human disease: influenza A, influenza B, and influenza C. Of these, influenza A and B are clinically most important.
Which type of virus causes leukemia?
Human T-Cell Lymphotropic Virus Type 1 (HTLV-1) HTLV-1 infects T cells, which are a type of white blood cell. It can cause leukemia and lymphoma.
What kind of virus is SARS CoV 2?
SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS 2 As more information and genetic analyses became available, the virus was given the official name of SARS-CoV-2 by the International Committee for Taxonomy of Viruses, while the WHO named the disease caused by the virus, COVID-19.
Why is it called Orthomyxovirus?
Classification. 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?
Definition of 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.
Is Covid RNA or DNA virus?
COVID-19, short for “coronavirus disease 2019,” is caused by the novel coronavirus SARS-CoV-2. Like many other viruses, SARS-CoV-2 is an RNA virus. This means that, unlike in humans and other mammals, the genetic material for SARS-CoV-2 is encoded in ribonucleic acid (RNA).
Is H1N1 still around?
In 2009, H1N1 was spreading fast around the world, so the World Health Organization called it a pandemic. Since then, people have continued to get sick from swine flu, but not as many. While swine flu isn’t as scary as it seemed a few years ago, it’s still important to protect yourself from getting it.