General properties of varicella zoster virus

Varicella zoster virus: mechanism transmission and preventio

The varicella-zoster virus (VZV for short) is a member of the herpes virus family and has similar structural properties to the herpes simplex virus. Viruses have a lipid envelope, the size of virus particles is 150-200 nm. Use live attenuated vaccine against chickenpox-shingles for the general population and those at high risk. This vaccine. In contrast to VZV gC, the general properties of gH and gL more closely resemble their HSV homologs. VZV gL behaves as a chaperone protein to facilitate the maturation of the gH protein. The mature gH protein in turn is a potent fusogen Human alphaherpesvirus 3, usually referred to as the varicella-zoster virus, is one of nine herpesviruses known to infect humans. It causes chickenpox, a disease most commonly affecting children, teens, and young adults, and shingles in adults; shingles is rare in children. VZV infections are species-specific to humans, but can survive in external environments for a few hours. VZV multiplies in the lungs, and causes a wide variety of symptoms. After the primary infection, the virus lies dorman

Overview of varicella-zoster virus glycoproteins gC, gH and g

Varicella zoster virus (VZV, also known as human herpesvirus 3) is a ubiquitous alphaherpesvirus with a double-stranded DNA genome. VZV only naturally infects humans, with no animal reservoir; its.. The first symptoms of clinical varicella generally appear after a 10-21 day incubation period and include fever, malaise and the characteristic itchy rash. Varicella is generally self-limited and vesicles gradually develop crusts, which disappear over a period of 7-10 days. Individuals remain contagious until all lesions have crusted over Varicella zoster virus (Chickenpox and shingles): upper respiratory multiplication of virus followed by dissemination via bloodstream to skin; skin cells damaged, blisters form containing serum and leukocytes; giant cells result from fusion of infected cells However, the virus that causes chickenpox, the varicella-zoster virus, remains inactive (dormant) in your body's nerve tissues and can return later in life as an illness called shingles. It's possible to catch chickenpox from someone with shingles, but not the other way around. Read more about shingles. Is there a vaccine against chickenpox

The varicella-zoster virus, like other herpesviridae, has an enveloped polyhedral structure. This type of structure has a polyhedral caspid surrounded by a membranous envelope. In the case of VZV, the caspid is icosahedral which means it is a regular shape with 20 triangular faces and 12 corners Genome of The varicella-zoster virus. The varicella-zoster virus is a double stranded DNA virus and it's genome, like other herpesviridae, is about 120,000 to 230,000 base pairs long. A prototype strain of VZV sequenced in the laboratory, called VZV Dumas, is 124,884 base pairs long

Varicella zoster virus - Wikipedi

  1. ent in adults over the age of 60 and individuals who have compromised immune systems, due to HIV infection, cancer treatment and/or transplant. Shingles is a worldwide health concern that affects approximately 600,000 Americans each year
  2. imal contribution from the cellular dTk activity
  3. Because these properties are shared by certain bacteria (rickettsiae, chlamydiae), viruses are now characterized by their simple organization and their unique mode of replication. A virus consists of genetic material, which may be either DNA or RNA, and is surrounded by a protein coat and, in some viruses, by a membranous envelope
  4. Introduction and Knowledge Gaps Varicella zoster virus (VZV) is one of the nine human herpesviruses. Primary VZV infection results in varicella (also known as chickenpox), a disease characterized by a vesicular rash, fever, headache, and loss of appetite (Heininger and Seward, 2006)
  5. Varicella-zoster virus (VZV), also known as human herpesvirus 3 (HHV3) belongs to the herpesvirus family (Herpesviridae). This classification is based on the morphological characteristics of the virus and its physical and chemical properties

Video: Varicella zoster virus infection Nature Reviews Disease

WHO Varicell

  1. There are marked similarities in the biological properties of the human neurotropic herpesviruses herpes simplex virus type 1 (HSV-1) and varicella-zoster virus (VZV), including their ability to establish lifelong latent infections in human peripheral sensory ganglia (PSG)
  2. Varicella-zoster virus is a highly contagious DNA virus. Varicella represents the primary infection in the nonimmune or incompletely immune person. During the primary infection, the virus gains..
  3. The varicella zoster virus remains dormant in the nervous system but can become active again later in life as a result of lowered immunity, leading to an attack

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 Herpes zoster, also known as shingles, is caused by the reactivation of the varicella-zoster virus (VZV), the same virus that causes varicella (chickenpox). Primary infection with VZV causes varicella. Once the illness resolves, the virus remains latent in the dorsal root ganglia Varicella Zoster Virus (VZV) is the etiological agent of two clinically distinct diseases: varicella (chicken pox) as primary infection and zoster (shingles) after reactivation of latent virus from the dorsal root ganglia Human Varicella-Zoster Immunoglobulin for intramuscular administration is bioavailable in the recipient's circulation after a delay of 2-3 days. Human Varicella-Zoster Immunoglobulin has a half-life of about 3-4 weeks. This half-life may vary from patient to patient. Biotransformation and Eliminatio

Chickenpox (varicella) NHS infor

Morphology - Varicella-zoster Virus (VZV

The use of a persistent replicating viral vector such as Varicella-Zoster Virus (VZV) has great potential to assemble this specific response. Live-attenuated varicella-zoster virus has been used as a vaccine worldwide for over 25 years and has a well-described safety profile. However, its immunogenicity data in the African population are lacking Other Herpes Viruses. The varicella-zoster virus belongs to a group of herpes viruses that includes 8 viruses that cause human disease (as well as more than 80 strains that can infect various animals). Herpes viruses are similar in shape and size and reproduce within the structure of a cell. The particular cell depends upon the specific virus

Varicella zoster virus Varicella zoster virus is a member of the alphaherpesvirus group and is the cause of both chickenpox (also known as varicella) and shingles (herpes zoster). The virus is surrounded by a covering, or envelope, that is made of lipid. As such, the envelope dissolves readily in solvents such as alcohol. Wiping surfaces with alcohol is thus an effective means of inactivating. Chickenpox is an acute, infectious disease caused by the varicella-zoster virus (VZV) and is most commonly seen in children under 10 years old.This virus can also cause shingles (herpes zoster.

Varicella-Zoster Infections Figure 82. Electron micrograph of varicella (chickenpox) virus. Varicella is an infectious disease caused by the varicella-zoster virus, which results in a blister-like rash, itching, tiredness, and fever. Courtesy of Centers for Disease Control and Prevention DETERMINATION OF EXPOSURE The exact m e c h a n i s m s of person-to-person transmission of varicel.la-zoster 16:4 April 1987 Annals of Emergency Medicine 421/77 VARICELLA-ZOSTER VIRUS EXPOSURE Sayre & Lucid virus are poorly understoodA 4 The pri- detect varicella i m m u n i t y has been varicella while receiving immunosup- mary source of. Straus SE SK, Oxman MN: Varicella and herpes zoster. Fitzpatrick's dermatology in general medicine. Edited by: Freedberg IM EA, Wolff K, Austen KF, Goldsmith LA, Katz SI. 2003, New York: McGraw-Hill Book Co, 2070-2085. 6. Google Scholar 40. Balfour HH: Varicella zoster virus infections in immunocompromised hosts Regarding herpes zoster, there were fewer herpes zoster cases among varicella vaccinees during the follow-up period than expected from rates in children of the same age with prior wild-type varicella during the pre-vaccine era (relative risk = 0.61, 95% CI 0.43 - 0.89). Breakthrough varicella and zoster cases were usually mild

Varicella-zoster virus (VZV) is an alphaherpesvirus that is the causative agent of chickenpox and herpes zoster. VZV open reading frame 5 (ORF5) encodes glycoprotein K (gK), which is conserved among alphaherpesviruses. While VZV gK has not been characterized, and its role in viral replication is unknown, homologs of VZV gK in herpes simplex virus type 1 (HSV-1) and pseudorabies virus (PRV. Varicella-zoster virus (VZV) is a ubiquitous human alphaherpesvirus that causes varicella (chicken pox) and herpes zoster (shingles). Varicella is a common childhood illness, characterized by fever, viremia, and scattered vesicular lesions of th Abstract The DNA of varicella-zoster virus (VZV) has been characterized by sucrose gradient sedimentation and by isopycnic banding in CsCl. Comparisons of the DNAs from different clinical isolates have been made by mixing radiolabeled DNAs prior to centrifugation. VZV-DNA sedimented just behind T4 DNA on neutral sucrose gradients. Thus VZV-DNA has a molecular weight of about 100 x 10 6 Varicella-zoster virus may present with exclusive follicular involvement. Most patients present with erythematous hyperkeratotic papules in a dermatomal distribution; however, dissemination can.

LVZV : Varicella-zoster virus (VZV) causes both varicella (chickenpox) and herpes zoster (shingles). VZV produces a generalized vesicular rash on the dermis (chickenpox) in normal children, usually before 10 years of age. After primary infection with VZV, the virus persists in latent form and may emerge clinically (usually in adults 50 years of age and older) to cause a unilateral vesicular. Occupational exposure to Varicella Zoster Virus (VZV) puts individuals at risk for varicella zoster infection (chickenpox) and recurrent infection with herpes zoster (shingles). Varicella infection causes symptoms of fever, rash, and malaise. Latent VZV may reactivate and cause recurrent disease (Herpes Zoster/Shingles) with painful skin lesions Herpes simplex virus (HSV) and varicella zoster virus (VZV) are usually spread via droplets or contact, which are preventable with good hygienic practices and droplet precautions. VZV, however, can also be transmitted via aerosols from patients with disseminated skin lesions of varicella or herpes zoster (HZ)

Herpes viridae HSV 1,2 and VZV

Varicella-zoster virus, a herpesvirus, causes varicella (chickenpox) and, after endogenous reactivation, herpes zoster (shingles). Varicella, which is recognised by a characteristic vesicular rash, arises mainly in young children, although older individuals can be affected. In immunocompetent patients, symptoms are usually mild to moderate, but an uncomplicated severe case can have more than. a herpesvirus, morphologically identical to herpes simplex virus, that causes varicella (chickenpox) and herpes zoster in man; varicella results from a primary infection with the virus; herpes zoster results from secondary invasion by the same virus or by reactivation of infection which in many instances has been latent for many years PATHOGEN SAFETY DATA SHEET - INFECTIOUS SUBSTANCES SECTION I - INFECTIOUS AGENT. NAME: Varicella-zoster virus. SYNONYM OR CROSS REFERENCE: VZV , chickenpox , shingles , Human herpesvirus 3 , Herpes Zoster.. CHARACTERISTICS: Varicella-Zoster virus belongs to the subfamily alphaherpesviridae in the Herpesviridae family, genus Varicellovirus.The Varicella-Zoster virus has a diameter of 150-200 nm.

Genome - Varicella-zoster Virus (VZV

3. Try Neem. Neem leaves are known for their antiviral properties and they can combat the varicella zoster virus. Steep neem leaves in hot water to make a mild tea which can be helpful. 4 You can also soak neem leaves in water and bathe in it. This will help relieve itching and soothe your skin. 5 4 Only 2 cases of congenital varicella syndrome were identified among 472 pregnancies in which maternal varicella occurred before 13 weeks (observed risk 0.4%, 95% CI 0.05-1.5%). Herpes zoster in infancy was reported in 10 children whose mothers had had varicella in pregnancy VIROLOGY . Varicella-zoster virus is a double-stranded DNA virus member of the alphaherpesvirus family.The virus is highly temperature sensitive and depends on the envelope proteins for infectivity. It is spread as a cell-free virus into the susceptible host, but once within the infected host is transmitted by cell-to-cell spread ().EPIDEMIOLOG Acyclovir is a synthetic analog of the purine nucleoside, guanosine, with potent antiviral activity against herpes simplex viruses type 1 and 2, varicella-zoster virus and other viruses of the herpesvirus family.After conversion in vivo to the active metabolite acyclovir triphosphate by viral thymidine kinase, acyclovir competitively inhibits viral DNA polymerase by incorporating into the. SHINGRIX (recombinant Varicella Zoster Virus glycoprotein E antigen) powder and suspension for suspension for injection . 1 NAME OF THE MEDICINE . Recombinant Varicella Zoster Virus glycoprotein E antigen ( AS01. B. adjuvanted vaccine) 2 QUALITATIVE AND QUANTITATIVE COMPOSITION . After reconstitution, 1 dose (0.5 mL) contains 50 micrograms of.

A Varicella-Zoster Virus Mutant that is Markedly Impaired

  1. This Procedure is intellectual property of South Eastern Sydney Local Health District. Procedure content cannot be duplicated. 1. POLICY STATEMENT Patients with suspected or confirmed chickenpox (primary Varicella Zoster virus) or shingles (latent Varicella Zoster virus) must be managed as outlined in this procedure
  2. Varicella, or chickenpox, is caused by the varicella-zoster virus. It is easily spread from person-to-person by touching or breathing in the virus particles from chickenpox blisters. Common symptoms include fever and a blister-like skin rash. Herpes zoster, or shingles, is a painful rash that can occur many years following chickenpox
  3. Chickenpox, also known as varicella, was once a common viral childhood disease. The causative agent of chickenpox, the varicella-zoster virus, is a member of the herpesvirus family. In children, the disease is mild and self-limiting, and is easily transmitted by direct contact or inhalation of material from the skin lesions
  4. Expression of the varicella-zoster virus origin-binding protein and analysis of its site-specific DNA-binding properties. Chen D , Olivo PD J Virol , 68(6):3841-3849, 01 Jun 199
  5. istered as postexposure prophylaxis, exclude from work from the 8 th day after the first exposure through the 28 th day after the last exposure. should be vaccinated within 3 to 5 days of exposure to rash. Vaccination 6 or more days after exposure is still indicated because it induces protection.
  6. 2,400 PFU of live, attenuated varicella-zoster virus. The inspection covered all the sections of the WHO GMP text, including quality assurance, sanitization and hygiene, complaints and recalls, self -inspection, personnel, training, personal hygiene, premises and equipment, materials, documentation

Varicella-zoster virus (VZV) causes chickenpox as a primary infection and shingles with recurrent infection. The symptoms of the former are a febrile, vesicular-pustular, pruritic rash. Those of the latter are pain and unilateral localized vesicles. Chickenpox causes a vesicular rash with lesions in all stages of development, including macules. Chickenpox, a highly contagious disease caused by a virus called varicella zoster, is one of the most commonly reported childhood diseases. Usually mild and not life-threatening to otherwise healthy children, it may be severe in infants, adults and persons with impaired immune systems. Infection confers long immunity; second attacks are rare General Medicine; General Oncology; Badani, H, Cohrs, RJ. A comparison of herpes simplex virus type 1 and varicella-zoster virus latency and reactivation. The Licensed Content is the.

The outcome of infection with most pathogens varies, from asymptomatic effects to severe disease. For example, infection with varicella zoster virus (VZV) occurs in 90% of the population, usually. Author summary Herpesviruses are ubiquitous infectious agents of medical and economic importance, including varicella-zoster virus (VZV), which causes chicken pox and shingles. A unifying theme of herpesviruses is their mechanism of entry into host cells, membrane fusion, via a core complex of virally expressed envelope glycoproteins gB, gH and gL. Of these, the primary fusogen, gB, is. The varicella zoster virus is a crafty one. When it affects someone for the first time, it produces chickenpox, but even when defeated, it never goes away. When the patient recovers, the virus. Varicella zoster virus triggers the immunopathology of giant cell arteritis. Curr Opin Rheumatol. 2016 Jul;28(4):376-82. PubMed PMID: 27224742 Gilden D, White T, Khmeleva N, Katz BJ, Nagel MA. Blinded search for varicella zoster virus in giant cell arteritis (GCA)-positive and GCA-negative temporal arteries Zoster Immunoglobulin-VF is a sterile, preservative free solution containing 160 mg/mL human plasma proteins and 22.5 mg/mL glycine. At least 98% of the protein is immunoglobulins (mainly IgG). It contains not less than 200 IU/vial varicella zoster antibody

The primary infection syndrome of varicella-zoster presents as varicella (chicken pox). The secondary infection syndrome is the reactivation of the latent varicella-zoster virus in the cranial nerve or dorsal-root ganglia, with spread of the virus along the sensory nerve to the dermatome-termed herpes zoster . Herpes zoster are painful blisters. Neem leaves have antiviral properties and act against the varicella zoster virus. 4 Applying a poultice of neem leaves to the rashes can help heal your skin. Alternatively, soaking a few neem leaves in your bath water can also be useful. 5. 2. Use An Apple Cider Vinegar Compress To Dry Up Blisters Herpes simplex virus Videos, Flashcards, High Yield Notes, & Practice Questions. Learn and reinforce your understanding of Herpes simplex virus. - Osmosis is an efficient, enjoyable, and social way to learn. Sign up for an account today! Don't study it, Osmose it Varicella zoster virus (VZV) produces two distinct clinical syndromes: varicella and zoster. Varicella or chickenpox is the primary manifestation of VZV infection. In temperate climates in the absence of vaccine, the lifetime risk for varicella is over 95% [1]. Over 90% or more of cases occur during the first 1 In general, PEP should be given as soon as possible following a high-risk exposure. and persons residing at nursing homes and other chronic care facilities. Varicella zoster virus

We have previously shown that the extensive sequence similarity between the herpes simplex virus type 1 (HSV-1) and varicella-zoster virus (VZV) members of the family (proteins Vmw175 and VZV140k) extends to function, since a virus which expresses VZV140k in place of Vmw175 is able to grow, albeit at reduced efficiency Acyclovir is a synthetic purine nucleoside analogue with in vitro and in vivo inhibitory activity against herpes simplex virus types 1 (HSV-1), 2 (HSV-2), and varicella-zoster virus (VZV). The inhibitory activity of acyclovir is highly selective due to its affinity for the enzyme thymidine kinase (TK) encoded by HSV and VZV Purpose The aim of this subset analysis was to determine if bortezomib treatment is associated with increased incidence of varicella-zoster virus (VZV) reactivation in patients with relapsed multiple myeloma (MM). Patients and Methods Incidence of herpes zoster was evaluated in 663 patients with relapsed MM from the phase III APEX trial comparing single-agent bortezomib with high-dose.

Human serum antibodies to varicella-zoster virus thymidine

Varicella-zoster virus (VZV), an alpha herpesvirus found exclusively in humans, can cause a wide spectrum of disorders throughout the lifetime of the individual.1-3 Varicella-zoster virus causes an acute febrile exanthamous illness (varicella or chickenpox), usually in childhood. After chickenpox resolves, VZV becomes latent in neurons of cranial and spinal ganglia of nearly all individuals. Hemorrhagic varicella CNS manifestations Pneumonia (primary viral or secondary bacterial) Congenital varicella Perinatal varicella Prevaccine era: • Hospitalization ~3 per 1,000 cases or 1,000/year • Death ~ 1 per 60,000 cases or 100/year Varicella Complication The varicella-zoster virus belongs to a group of herpes viruses that includes 9 viruses that cause human disease (as well as more than 130 strains that can infect various animals.) Herpes viruses are similar in shape and size and reproduce within the structure of a cell

Chickenpox (varicella) is caused by varicella zoster virus (VZV). It is often a mild illness, but may be severe in infants, pregnant women, adults, and persons with weakened immune systems. An itchy rash starts on the trunk and face with pink spots and tiny fluid-filled blisters (pox) that then dry and become scabs in 4 to 5 days About Chickenpox (Varicella) Chickenpox, or varicella, is a highly contagious disease caused by the varicella-zoster virus (VZV). It causes an itchy, blister-like rash that appears first on the chest, back, and face, and then spreads over the entire body. Other typical symptoms include fever, tiredness, loss of appetite, and headache

Varicella-zoster virus, the virus responsible for causing chickenpox, is infamous in part because it is highly transmissible.Today, however, chickenpox is much less common in the United States than it once was. The varicella virus spreads via particles transmitted through the air, as well as through skin-to-skin contact Varicella zoster virus causes Varicella (chickenpox) after primary infection and herpes zoster (shingles) after endogenous reactivation. The virus contains a double stranded DNA genome and is a member of the Herpesviridae family. Herpes viruses are characterised by the persistence of infection after primary infection, a property known as latency disease during primary varicella and usually have more-severe and multidermatomal herpes-zoster disease [1]. Proliferative T cell responses specific for the virus in individuals with acute primary varicella are associated with milder disease, whereas the presence of VZV-specific IgM and IgG responses do not correlate well with disease severity.

Brief description Varicella zoster virus (VZV) is a herpesvirus which causes chicken pox and shingles. Shingles affects many elderly people and a major complication is prolonged severe pain or post-herpetic neuralgia, often needing follow-up medical care for months to years. Despite its impact on the community, little is known about how this. It is known that VZV encephalitis is the result of the varicella zoster virus, a double-stranded DNA virus within the Herpesviridae family of viruses. The immune system eliminates the virus from most locations upon initial infection, but it remains latent in the dorsal root ganglion and the trigeminal ganglion near the base of the skull Varicella-zoster virus (VZV), a neurotropic herpesvirus, is the causative agent of both varicella (chickenpox) and zoster (shingles). As with the other herpesviruses, VZV causes both acute illness and lifelong latency. Before vaccination became widespread, acute primary infection (varicella or chickenpox) was common during childhood.

Varicella-zoster virus definition of varicella-zoster

Chickenpox is caused by the varicella-zoster virus. You catch it by coming into contact with someone who is infected. Chickenpox is a very contagious infection. Around 90% of people who have not previously had chickenpox will become infected when they come into contact with the virus. How you catch the virus Herpes zoster. Created 2009. Learning objectives. Identify and manage herpes zoster infections; Clinical features of herpes zoster. Herpes zoster, or shingles, is a painful blistering rash caused by reactivation of the herpes varicella-zoster virus. The primary infection presents as chickenpox (varicella), usually during childhood. Like herpes simplex, the virus persists in selected cells of. Current developments in varicella-zoster virus disease prevention. This is a report on the varicella-zoster virus workshop convened by the National Centre for Immunisation Research and Surveillance of Vaccine Preventable Diseases on 16-17 November 2006 Chicken pox, shingles, varicella, zoster: patients benefit from scientific research UCHealth Today Jul 12, 2017 Maria Nagel, MD, is one of the top clinical reserachers of the varicella-zoster virus that causes chicken pox, shingles and other diseases

Frontiers Varicella Virus-Host Interactions During

Chickenpox is an illness caused by the varicella-zoster virus. It causes a viral skin rash consisting of fluid-filled blisters that are intensely itchy. The rash appears approximately 10 to 21 days after you are exposed to the virus. And the viral rash lasts about 5 to 10 days. The rash has three phases The varicella-zoster virus that causes shingles can spread to others causing chickenpox in patients who have not had it in the past. It is not possible to get shingles from another person with shingles, but it is possible to get chickenpox.. Shingles are contagious from the time the blisters are oozing until the time the blisters have scabbed.. To reduce the risk of spreading the virus, the.

Varicella-zoster virus (VZV) is a member of the herpesviridae family, and its primary infection causes varicella in children. VZV often persistently infects dorsal root ganglia (DRG) and is sometimes activated from a latent to lytic state, causing zoster in aged and immunosuppressed individuals [].The double-stranded VZV genome contains approximately 125 kbp with at least 71 open reading. Varicella zoster virus (VZV) is a neurotropic alphaherpesvirus and the causative agent of varicella (chickenpox) in humans. Following primary infection, VZV establishes latency in the sensory ganglia and can reactivate to cause herpes zoster, more commonly known as shingles, which causes significant morbidity, and on rare occasions mortality, in the elderly Laboratory reports of varicella-zoster virus to LabVISE, 1991 to 2000, by age and sex The ASPREN surveillance system is a network of about 120 general practitioners, mostly located in metropolitan areas, who together record between 7,000 and 8,000 consultations per week of specified conditions Varicella-zoster virus (VZV) is an alphaherpesvirus that infects skin, lymphocytes, and sensory ganglia. VZV glycoprotein E (gE) has a unique N-terminal region (aa1-188), which is required for repli-cation and includes domains involved in secondary envelopment, efficient cell-cell spread, and skin infection in vivo. The noncon

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The varicella-zoster virus (VZV) is a type of herpes virus that causes both chickenpox (varicella) and shingles (herpes zoster). Chickenpox occurs from first-time exposure to the virus and usually affects children. Shingles is a later reactivation of the virus that typically strikes adults. Uncommonly, the varicella-zoster virus can cause. IX. VARICELLA ZOSTER VIRUS. A. Varicella (chickenpox) is the primary disease - herpes zoster or shingles is the recurrent form. B. Transmission and Epidemiology. 1. Humans are the natural host . 2. Transmitted by respiratory droplets . 3. Highly contagious; over 90% of people have antibody by age 1 to such properties as size, the type of nucleic acid they contain, the structure of the capsid and the number of protein subunits in it, host species, and immunological characteristics. It also means that Varicella-zoster virus Cytomegalovirus Epstein-Barr virus Human herpesvirus 6 (Roseola