What is the classification of varicella zoster virus?
VZV is a DNA virus and is a member of the herpesvirus group. Like other herpesviruses, VZV persists in the body as a latent infection after the primary (first) infection; VZV persists in sensory nerve ganglia. Primary infection with VZV results in varicella.
Which group of viruses is Class I Baltimore classification?
double-stranded DNA viruses
Group I: double-stranded DNA viruses. The first Baltimore group contains viruses that have a double-stranded DNA (dsDNA) genome. All dsDNA viruses have their mRNA synthesized in a three-step process.
What is the Baltimore classification scheme for viruses based on?
genome type and replication strategy
The Baltimore classification scheme groups viruses based on genome type and replication strategy. For a virus to replicate, it must generate mRNAs from its genome and there are seven ways of doing so, or seven classes of viruses.
Is varicella a genus?
VaricellovirusVaricella zoster virus / Genus
Varicella-zoster virus (VZV) is a member of the Alphaherpesvirinae subfamily, genus Varicellovirus of the family Herpesviridae.
What family does chickenpox belong to?
Varicella Zoster virus (VZV) is part of the family of Herpesviridae. Varicella, or chicken pox, is the initial disease of VZV. Primary infection occurs in childhood.
What are the seven Baltimore classifications of viral DNA?
The seven classes of viruses in the Baltimore Classification System are as follows:
- Class I: Double stranded DNA (dsDNA) viruses.
- Class II: Single stranded DNA (ssDNA) viruses.
- Class III: Double stranded RNA (dsRNA) viruses.
- Class IV: Single stranded RNA (ssRNA) viruses.
- Class V: Single stranded RNA (ssRNA) viruses.
What are the 7 different groups of viruses according to their nucleic acid type?
Viruses can be placed in one of the seven following groups:
- I: dsDNA viruses (e.g. Adenoviruses, Herpesviruses, Poxviruses)
- II: ssDNA viruses (+ strand or “sense”) DNA (e.g. Parvoviruses)
- III: dsRNA viruses (e.g. Reoviruses)
- IV: (+)ssRNA viruses (+ strand or sense) RNA (e.g. Coronaviruses, Picornaviruses, Togaviruses)
Where did varicella zoster virus originated?
Abstract. Varicella zoster virus (VZV) is the causative agent of chickenpox and shingles. The geographic distribution of VZV clades was taken as evidence that VZV migrated out of Africa with human populations. We show that extant VZV strains most likely originated in Europe and not in Africa.
Is shingles DNA or RNA virus?
Varicella-zoster virus (VZV) is an enveloped double-stranded DNA virus belonging to the family Herpesviridae [70]. VZV is also called human herpesvirus type 3. VZV infects the lungs and enters into the nerves, including the cranial nerve ganglia and dorsal root ganglia.
What type of virus is the shingles virus?
Shingles is caused by varicella zoster virus (VZV), the same virus that causes chickenpox. After a person recovers from chickenpox, the virus stays dormant (inactive) in their body. The virus can reactivate later, causing shingles. Most people who develop shingles have only one episode during their lifetime.