Pox virus replication SlideShare

Poxviruses are unique among DNA viruses in that they replicate in the cytoplasm of the cell rather than in the nucleus. In order to replicate, poxviruses produce a variety of specialized proteins not produced by other DNA viruses, the most important of which is a viral-associated DNA-dependent RNA polymerase What is Smallpox Virus Smallpox is caused by the variola virus, a DNA virus of the genus Orthopoxvirus. Humans are the only known reservoir for this virus. It is transmitted from person to person, and natural infection occurs by inhalation of respiratory droplets or contact with infected material on mucous membranes 23. Conclusion: In general terms, virus replication involves three broad stages carried out by all types of virus; the initiation of infection, replication and expression of the genome, and, finally, release of mature virions from the infected cell. At a detailed level, there are many differences in the replication processes of different. Smallpox 1. SMALLPOX MADE BY MD.FADI SAAD AOLOW 2. INTRODUCTION A highly contagious and frequently fatal viral disease. The disease is also known by the Latin names Variola or Variola Vera, which is a derivative of the Latin Varius, meaning spotted, or Varus, meaning pimple. The term Smallpox was first used in Europe in the 15th century to distinguish Variola from the great pox. Poxvirus infections typically result in the formation of lesions, skin nodules, or disseminated rash. Infection in humans usually occurs due to contact with contaminated animals, people, or materials. While some poxviruses, such as smallpox (variola virus), no longer exist in nature, other poxviruses can still cause disease

The large genome enables poxviruses to encode many virulence factors that are nonessential for virus replication in cell culture but which influence the outcome of infection in vivo. Diseases caused by poxviruses range from mild infections to devastating plagues, such as smallpox in man, mousepox in the laboratory mouse, and myxomatosis in the. The replication of the poxvirus occurs in the cytoplasm. The virus is suficiently complex and has acquired all the functions necessary for genome replication. Although the cell contributes to the process, it is not clear what exactly the cell does: poxvirus gene expression and genome replication occur in enucleated cells, but maturation is blocked Virus penetrates into the host cell. Uncoating, and release of the viral genomic RNA into the cytoplasm. The viral RNA is translated to produce a polyprotein which is processed by viral proteases into the RdRp protein and structural proteins. Replication takes place in cytoplasmic viral factories. A dsRNA genome is synthesized from the genomic.

Everything you need to know about Smallpox in a paper slide video :- https://bit.ly/2RQHvTN.

January 2011 REPLICATION OF dsDNA GENOME VIRUSES B. Poxviruses. The poxviruses have the largest virions among all viruses, containing a large dsDNA genome (roughly the same genome size range as the herpesviruses).Variola virus (smallpox) and Vaccinia virus (the vaccine against smallpox) have a genome size of about 190 Kbp, coding for about 180 proteins (about 150 of which are very similar. • Chickenpox and Shingles - Varicella-zoster virus (VZV) causes both diseases • Signs and symptoms •Chickenpox •Highly contagious infectious disease •Characterized by lesions on the back and trunk that spread across body •Virus becomes latent within sensory nerves •Shingles •Occurs following reactivation of the virus Viruses are small obligate intracellular parasites, which by definition contain either a RNA or DNA genome surrounded by a protective, virus-coded protein coat. Viruses may be viewed as mobile genetic elements, most probably of cellular origin and characterized by a long co-evolution of virus and host. For propagation viruses depend on specialized host cells supplying the complex metabolic and. Chickenpox during pregnancy is a potentially serious problem as there is a 1%-2% risk for the development of congenital varicella syndrome: limb hypoplasia, muscular atrophy, skin scarring, cortical atrophy, microcephaly, cataract formation, and rudimentary digits. In most children, chickenpox is a self-limited illness The Potential for New Discoveries<br />A marine virus has been found with a gigantic genome that contains compounds that might be used in anti-ageing and cancer-inhibiting therapies.<br />This virus is known to infect a marine algae species that is important in taking billions of tonnes of carbon dioxide from the atmosphere and is thought to.

Poxvirus - SlideShar

  1. Sometimes it works well - varicella-zoster virus belongs to the species Human alphaherpesvirus 3 and causes chickenpox (although it is not a pox virus). On occasion, the system is less successful - Japanese encephalitis virus belongs to the species Japanese encephalitis virus and causes Japanese encephalitis
  2. Poxviruses compromise a group of long known important pathogens including some zoonotic members affecting lifestock animals and humans. While whole genome sequence analysis started to shed light into the molecular mechanisms underlying host cell infection, viral replication as well as virulence, our understanding of poxvirus maintenance in nature and their transmission to humans is still poor
  3. Key Takeaways Key Points. From the perspective of the virus, the purpose of viral replication is to allow production and survival of its kind. Most double-stranded DNA viruses replicate within the host cell nucleus, including polyomaviruses, adenoviruses, and herpesviruses—poxviruses, however, replicate in the cytoplasm
  4. Varicella 353 22 Varicella is an acute infectious disease caused by varicella-zoster virus (VZV). Primary varicella infection (chickenpox) was not reliably distinguished from smallpox until the end of the 19th century. In 1875, Rudolf Steiner demonstrated that chickenpox was caused by an infectious agent by inoculatin
  5. Avipoxviruses (APVs) belong to the Chordopoxvirinae subfamily of the Poxviridae family. APVs are distributed worldwide and cause disease in domestic, pet and wild birds of many species. APVs are transmitted by aerosols and biting insects, particularly mosquitoes and arthropods and are usually named after the bird species from which they were originally isolated. The virus species Fowlpox virus.

Viral replication - SlideShar

  1. A few notable examples that have garnered the attention of the public health community and the population at large include: COVID 19, Ebola, SARS, Influenza, Zika, Yellow fever, Human immunodeficiency virus (), Human papillomavirus (HPV), Viral gastroenteritis, Varicella, and Viral hepatitis. Image at R: A simplified diagram of the Hepatitis C virus replication cycle
  2. ation of pock lesions under specific temperatures. In addition, PCR analysis may allow for a definite deter
  3. • The capacity of a virus to cause disease in an infected host • A virulent virus causes significant disease, while an avirulent or attenuated virus causes reduced or no disease • Virulence can be quantitated: -LD 50 (Lethal Dose 50%; amount of virus needed to kill 50% of infected animals) -The mean time to deat
  4. Chickenpox (Varicella) and Shingles (Herpes Zoster) Chickenpox (varicella) is a very highly contagious disease of the skin primarily of children two to seven years of age. Humans are the reservoir and the source for this virus, which is acquired by droplet inhalation into the respiratory system. The virus is very infectious, with secondary.
  5. In nature, there are many harmful viruses which can cause diseases in plants and animals. Some notable human disease causing viruses are HIV, influenza, herpes, hepatitis, Polio virus (Polio myelities), Measles virus, small pox virus (variola, Vaccinia) while in plants, notable viruses are tobacco mosaic virus, Bean Mosaic Virus(BMV), Pea Mosaic Virus (PMV), Cauliflower Mosaic Virus(CMV)
  6. Smallpox, one of the biggest killers in history, is caused by a virus called variola. Variola causes a distinctive rash and is often lethal. The name variola comes from the Latin word for spotted and refers to the raised bumps that appear on the face and body of infected individuals. Although similar in name and in the formation of a rash.
  7. Background. Varicella, commonly known in the United States as chickenpox, is caused by the varicella-zoster virus. The disease is generally regarded as a mild, self-limiting viral illness with occasional complications. Varicella is common and highly contagious and affects nearly all susceptible children before adolescence

Smallpox - SlideShar

Paramyxoviruses cause disease in many species. including pigs, chickens, fish, snakes. Paramyxovirus in Animals: Rinderpest. disease of cows, antelope, deer. -measles like virus. -fever, loss of appetite, diarrhea, death. -worldwide plague of cattle. -in late 1800s killed 80% of cows in southern Africa Herpes Virus Dr. Deepak K. Gupta. 2. Introduction • It's a kind of enveloped DNA virus. • Icosahedral core surrounded by a lipoprotein envelope. • linear double-stranded DNA. • Large (120-200 nm in diameter), second in size only to poxviruses. • Capsid surrounds DNA core and over the capsid is tegument (a protein-filled region)

SlideShare Explorar Pesquisar Voc 20 nm (smallest virus) Pox virus: 300 nm (biggest virus and can be seen under light microscope) Viruses contain a single kind of nucleic acid either DNA or RNA which encodes the genetic information necessary for replication of the virus. The genome may be single stranded or double stranded, circular or. +91-8118 099 951/52 Home; About Us. Who We Are; Mission & Vision; Business Verticals. Solar; Electrica

Poxvirus CD

Poxvirus DNA Replication 779 hairpin unique seqs 70 bp repeats Replication Efkiency of Minichromosomes Flanked oy Indicated Telomeres 1 65BP 6 80 135 h 13WBP 125 ':, 37WEP (Supercoiled DNA subsiraies) 120 10 Figure 2 Organization of vaccinia virus genomic termini and analysis of the se- quences involved in template activity HERPES SIMPLEX VIRUS Characteristics of HSV DNA double stranded virus, linear 125-250 Kb long, relatively big Enveloped Virion size 200 nm, relatively big 9 HSVs, Ex. Varicella, EBV, CMV Diseases: Chickenbox, Mononucleosis, Hepatitis, Encephalitis Recurrent eye, mouth and genital lesions Herpes Virus and Common Diseases Everybody knows chickenpox and likely you experienced the disease as a. D. Replication is how a virus spreads. A virus CANNOT reproduce by itself—it must . invade. a . host. cell and take over the cell . activities, eventually . causing. destruction. of the cell and . killing. it. (The virus enters a cell, makes copies. of itself and causes the cell to . burst. releasing more viruses.) DNA/RNA is . copied. DNA. As viruses are obligate intracellular pathogens they cannot replicate without the machinery and metabolism of a host cell. Although the replicative life cycle of viruses differs greatly between species and category of virus, there are six basic stages that are essential for viral replication. 1. Attachment: Viral proteins on the capsid or phospholipid envelope interact wit Smallpox disease Smallpox was an infectious disease caused by either of two virus variants, Variola major and Variola minor. The disease is also known by the Latin names Variola or Variola Vera, derived from various (spotted) or varus (pimple). The disease was originally known in English as th

Influenza Replication in Greater Detail The influenza virus enters the host cell by having its hemagglutinin bind to the sialic acid found on glycoproteins or glycolipid receptors of the host. The cell then endocytoses the virus. In the acidic environment of the endosomes, the virus changes shape and fuses its envelope with the endosomal membrane Latency common. Includes herpes simplex type 1 and 2, varicella zoster virus (chicken pox, shingles), Epstein Barr virus (infectious mononucleosis), cytomegalovirus. POXVIRIDAE. C + 200nm x 350nm + Vaccinia, smallpox, cowpox viruses Cytoplasmic, very complex. * Formerly grouped together as the PAPOVAVIRIDA to download this presentation form this link https://mohmmed-ink.blogspot.com/2020/12/varicella-zoster-virus.html Varicella zoster virus in kid ADVERTISEMENTS: In this article we will discuss about:- 1. Meaning of Poliovirus 2. Morphology of Poliovirus 3. Replication 4. Cultivation. Meaning of Poliovirus: Poliovirus is a member of the enterovirus subgroup, family Picornaviridae. Picornaviruses are small, ether- insensitive viruses with an RNA genome. There are three poliovirus serotypes: serotype 1, 2, and 3. Serotype 1 [

Poxviruses - an overview ScienceDirect Topic

  1. The chicken pox virus does not belong this family! - It is a herpesvirus. genome: double-stranded DNA, monopartite, linear, noninfectious; encodes over 100 genes, including DNA dependent RNA transcripase morphology: complex, ovoid or brick-shaped nucleocapsid envelope: orthopox are enveloped, parapox are not replication: takes place in.
  2. Viral replication is the term used indicate the formation of biological viruses during the infection process in the target host cells. Viruses must first penetrate and enter the cell before viral replication can occur. From the perspective of the virus, the purpose of viral replication is to allow reproduction and survival of its kind
  3. Varicella Zoster Virus is a virus completely unique to humans, therefore no other animal can host VZV and there is no animal equivalent.The virus is currently being studied by many biologist all over the world, but it is still unclear exactly what happens to the virus to make it go into latency and what triggers the virus to come out of latency. . Because so little is known about the steps.
  4. 7 Acyclovir I • Development represents a watershed in the field of antiviral chemotherapy • Acyclic guanosine analog • Active vs. HSV, VZV and modestly CMV • Mechanism of action - Preferentially taken up by virally infected cells - Monophosphorylated by virally encoded thymidine kinases - Di- and triphosphorylation completed by cellular kinases - ACV-TP is the active moiet
  5. Poxvirus (smallpox) The largest and most complex viruses that occur in humans, birds, animals, and insects. Poxviruses (family Poxviridae) are large, brick-shaped or ovoid double-stranded DNA viruses of about 200-300 nm in diameter with a complex structure. Include a large group of DNA viruses that are morphologically similar and share a.

DNA replication is bidirectional (There are two replication forks per circular DNA genome and replication involves leading/lagging strands, Okazaki fragments, DNA ligase, etc.). This process of DNA replication is very similar to that which occurs in the host cell - which is not surprising as the virus is using mainly host machinery except for. The influenza virus, HIV, and the varicella zoster virus (Figure below) are enveloped viruses. An enveloped virus. Varicella zoster virus causes chicken pox and shingles. The viral envelope can give a virus some advantages over other capsid-only viruses. For example, they have better protection from the host's immune system, enzymes and certain. Pathogenesis is the process by which virus infection leads to disease. Pathogenic mechanisms include implantation of the virus at a body site (the portal of entry), replication at that site, and then spread to and multiplication within sites (target organs) where disease or shedding of virus into the environment occurs. Most viral infections are subclinical, suggesting that body defenses. The best-studied poxviruses belong to the Orthopoxvirus genus and include variola virus (VAR; the causative agent of smallpox) and monkeypox virus (MPX; the causative agent of monkeypox). Vaccinia virus (VACV) is highly similar to VAR and MPX viruses and is used as a vaccine to protect against both infections (Moss, 2013) Viral Latency. Some viruses have the ability to become dormant inside the cell. Called latent viruses. They may remain inactive for long periods of time (years) Later, they activate to produce new viruses in response to some external signal. HIV and Herpes viruses are examples

Infectious laryngeotracheitis

Poxviridae - microbewik

ACAM2000 ®. , (Smallpox [Vaccinia] Vaccine, Live), a replication-competent vaccine, for active immunization against smallpox disease in persons determined to be at high risk for smallpox infection. The vaccine does not contain variola virus and cannot cause smallpox. It contains vaccinia virus, which belongs to the poxvirus family, genus. A common example of this group of the virus is the pox virus. More of Replication RNA virus genome. Around 70% of viruses contain RNA as their genome. Several studies reported that RNA viruses show higher mutation rates than DNA viruses due to the errors of the enzyme involved in RNA replication Eg. Influenza virus, Pox virus; 3. Replication and assembly in nucleus of host: All DNA viruses replicate and assemble in nucleus of host cell except Pox virus. 4. Virus replication through ds DNA intermediate: Eg. All DNA virus, Retro virus and some tumor causing RNA virus replicates through ds DNA as intermediates. 5 General. Variola virus is the causative agent of smallpox and is a member of the Poxviridae family. 24 Smallpox was eradicated worldwide in 1977, but now has regained interest because of its potential as a bioterrorism agent. 24,25 Smallpox was widely endemic and at one point accounted for more than 10% of all deaths worldwide The future of vaccines . Did you know that scientists are still working to create new types of vaccines? Here are 2 exciting examples: DNA vaccines are easy and inexpensive to make—and they produce strong, long-term immunity.; Recombinant vector vaccines (platform-based vaccines) act like a natural infection, so they're especially good at teaching the immune system how to fight germs

HIV Replication Cycle. This infographic illustrates the HIV replication cycle, which begins when HIV fuses with the surface of the host cell. A capsid containing the virus's genome and proteins then enters the cell. The shell of the capsid disintegrates and the HIV protein called reverse transcriptase transcribes the viral RNA into DNA Lumpy skin disease (LSD) is an infectious disease in cattle caused by a virus of the family Poxviridae, also known as Neethling virus.The disease is characterized by fever, enlarged superficial lymph nodes and multiple nodules (measuring 2-5 centimetres (1-2 in) in diameter) on the skin and mucous membranes (including those of the respiratory and gastrointestinal tracts) Varicella (chickenpox):Highly contagious viral infection causing itchy, blister-like rash on the skin. Now there exist a vaccine to prevent chickenpox so it can be rare for some who receive this vaccine to become infected with chickenpox. The dental professional must be familiar with all diseases that the Herpes virus involves s Infection and Immunity. What does a pathogen have to do? Infect (infest) a host Reproduce (replicate) itself Ensure that its progeny are transmitted to another host Viruses may be transmitted in the following ways Direct transmission from person to person by contact The major means of transmission may be by droplet or aerosol infection (e.g., influenza, measles, smallpox); by the fecal-oral.

More Bacteriophages. Above a siphovirus, e.g. lambda bacteriophage. Phage lambda is a parasite of enteric bacteria such. as Escherichia coli. Unlike T4 it only has a single tail fibre and it has a tapering tail tube. Like T4, however, it still injects its DNA into the host cell, although the tail is non-contractile. The lambda The replication-competent smallpox vaccines (i.e., ACAM2000 and APSV) can protect people from getting sick or make the disease less severe if they receive the vaccine either before or within a week of coming in contact with smallpox virus. If you get the vaccine: Before contact with the virus, the vaccine can protect you from getting sick Influenza virus, Pox virus; Replication and assembly in nucleus of host: All DNA viruses replicate and assemble in nucleus of host cell except Pox virus. Virus replication through ds DNA intermediate: All DNA virus, Retro virus and some tumor causing RNA virus replicates through ds DNA as intermediates Varicella-Zoster Virus (VZV) VZV is a DNA virus and is a member of the herpesvirus family. 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 (chickenpox)

Potyvirus - ViralZon

Smallpox: The Major Variola Virus - YouTub

Herpes simplex virus replication Steps - Microbiology

Poxviruses are a highly successful family of pathogens, with variola virus, the causative agent of smallpox, being the most notable member. Poxviruses are unique among animal viruses in several respects. First, owing to the cytoplasmic site of virus replication, the virus encodes many enzymes required either for macromolecular precursor pool regulation or for biosynthetic processes Some of the most important properties of viruses are as follows: 1. Viral Size: The viruses are smallest disease causing agent in living organisms. The plant viruses range in size from 17nm to 2000nm, while animal viruses range in size from 20- 350 nm. 2 The size of virus ranges from (20-300) nm in diameter. Parvovirus is the smallest virus with size 20nm whereas Poxvirus is largest being 400nm. 2. Shape: The overall shape of virus varies in different groups of virus. Most of animal viruses are spherical shape, Pox virus is rectangular shape, TMV is rod shape, Poliovirus is bullet shape et

BioS 353 - Lehigh Universit

  1. The varicella-zoster virus (VZV) genome is a linear double-stranded DNA molecule consisting of approximately 125000 base pairs with an average G + C content of 46%. Computer analysis of the sequence predicted the presence of approximately 70 open reading frames (ORFs). The genome is similar in overall structure to other alphaherpesvirus DNAs.
  2. Tobacco mosaic virus is the most extensively studied plant virus. It is a helically symmetrical, rod-shaped virus having the length of 3000Å and diameter of 180A. It RNA is a single stranded spirally coiled molecule formed of 6500 nucleotides. The capsid is formed of 2130 capsomeres, each with a molecular weight of 18,000
  3. the plant and animal kingdoms. Their forms, genetic content, and patterns of infection and replication are radically varied. Some produce symptoms of various well-known diseases in humans, such as influenza, herpes, warts, chicken pox, smallpox, and so on. The majority of viruses known to infect humans, however, produce n
  4. 1 Chapter 6 - Virology • Topics -Structure -Classification -Multiplication -Cultivation and replication -Nonviral infectious agent -Teratogenic/Oncogenic - Viruses have a host range.That is, viruses infect specific cells or tissues of specific hosts, or specific bacteria, or specific plants

Antiviral drug, any agent used in the treatment of an infectious disease caused by a virus. Antiviral agents generally are designed to block viral replication or disable viral proteins. Examples of antiviral drugs include agents to combat herpes viruses, influenza viruses, and HIV Antigenicity. Virions are moderately immunogenic; there are serological relationships among many members. Some monoclonal antibodies react with most aphid-transmitted potyviruses. The CP aa sequence identity among aphid-transmitted viruses is 40-70%. Some viruses are serologically related to viruses in the genera Rymovirus and Bymovirus

In order for viral replication to occur, the virus must first infect a host cell. The virus injects its genetic material into the cell and uses the cell's organelles to replicate. Once a sufficient number of viruses have been replicated, the newly formed viruses lyse or break open the host cell and move on to infect other cells Negative-strand RNA viruses contain a ribonucleoprotein complex composed of the genome and an RdRp attached to each segment of the genome surrounded by a capsid. The capsid is composed of proteins whose folded structure contains five alpha-helices in the N-terminal lobe (5-H motif) and three alpha-helices in the C-terminal lobe (3-H motif). Inside the capsid, the genome is sandwiched between. programs eliminate varicella, this is already evident in cases of nosocomial varicella in the United Kingdom, where many cases arise from contact with HZ rather than varicella [20]. References 1. Padilla J, Grose C, Butcher E, Arvin A. Tropism of varicella-zoster virus for human tonsillar CD4+ T lymphocytes that express activation, memory and ski

The smallpox vaccine, introduced by Edward Jenner in 1796, was the first successful vaccine to be developed. He observed that milkmaids who previously had caught cowpox did not catch smallpox and showed that inoculated vaccinia protected against inoculated variola virus. The global eradication effort initially used a strategy of mass. The virus can infect any mammal, and most die within weeks of infection. Smallpox is a human virus transmitted by inhalation of the variola virus, localized in the skin, mouth, and throat, which causes a characteristic rash. Before its eradication in 1979, infection resulted in a 30 to 35 percent mortality rate Pox Virus is Brick Shape. Rabies Virus is Bullet Shape. Corona virus is Petal shape. Rota Virus is Wheel Shape. Astrovirus is Star Shape. Ebola Virus is Filamentous in Shape. 3. Structure of Virus. Virus is mainly made up of two components and that is Nucleic acid and Capsid But some viruses may also posses envelop

Structure and Classification of Viruses - Medical

General virology

Poxvirus (Pox = pus-filled blister = Pocks) Dr. John Buist (1887): demonstrated microscopically. Paschen (1906): developed a staining technique and demonstrated elementary bodies (Paschen bodies)from a lesion of smallpox. Smallpox was an infectious disease and it was caused by one of two virus variants, Variola major and Variola minor This is the fifth fact sheet in a series of ten designed to provide an overview of key concepts in plant pathology. Plant pathology is the study of plant disease including the reasons why plants get sick and how to control or manage healthy plants. Viruses are intracellular (inside cells) pathogenic particles that infect other living organisms. Human diseases caused by viruses include. Viruses can store their genetic information in six different types of nucleic acid which are named based on how that nucleic acid eventually becomes transcribed to the viral mRNA (Figure 10.4. 1) capable of binding to host cell ribosomes and being translated into viral proteins. Figure 10.4. 1: Transcription of Viral Nucleic Acid into Viral mRNA

This is called viral replication and it is the way viruses reproduce. Once new viruses have been made, they can go on to infect new host cells, and new hosts. Most viruses cause disease , and they are usually quite specific about the area of the body that they attack, for example, the liver, the respiratory tract, or the blood A closely related virus named HTLV-2 is associated with relatively mild neurological disorders but has not been identified as a causative agent of human disease. As many as 20 million people worldwide are thought to be infected with HTLVs, but only a small percentage of infected individuals actually develop ATL or HAM/TSP

Varicella-Zoster Virus (VZV): Slidesho

  1. The branch of microbiology which deals with the study of viruses, their properties, mode of replication, symmetry and their diseases in humans and animals is termed as Virology. Virologists are those scientists who study virology. Some viruses do not cause any disease in humans and remain as carrier but sometimes they target the host cells and cause local or systemic toxic effects. A list of.
  2. Cell-based vaccines are developed from mammalian cell lines rather than the more common method which uses the cells in embryonic chicken eggs to develop the antigens. The potential use of cell culture techniques in developing viral vaccines has been widely investigated in recent years as a complementary and alternative platform to the current egg-based strategies
  3. Most productive viral infections follow similar steps in the virus replication cycle: attachment, penetration, uncoating, replication, assembly, and release (Figure 1). Attachment A virus attaches to a specific receptor site on the host cell membrane through attachment proteins in the capsid or via glycoproteins embedded in the viral envelope
  4. The structure of Varicella virus is very similar to Herpes Simplex virus although the genome is somewhat smaller. Diseases caused by Varicella-Zoster virus. This virus causes two major diseases, chicken-pox (Varicella), usually in childhood, and shingles, later in life. Shingles (Zoster) is a reactivation of an earlier varicella infection.
  5. Entry: The first step of viral replication is getting into the cell.VP1 and VP3, found on the capsid, are involved in binding to receptors on the host cell's plasma membrane. VP2 causes the virus.
  6. Poxviruses (members of the Poxviridae family) can infect both humans and animals. The orthopoxviruses include smallpox (variola), monkeypox, vaccinia, cowpox, buffalopox, cantagalo, and aracatuba viruses.The parapoxviruses include orf virus, bovine papular stomatitis virus, pseudocowpox virus, deerpox virus, and sealpox virus.Yatapoxviruses include tanapox virus and yabapoxviruses, which are.
  7. Bacterial and viral infections can cause similar symptoms such as coughing and sneezing, fever, inflammation, vomiting, diarrhea, fatigue, and cramping -- all of which are ways the immune system.
8 - Virus Structure MultiplicationVirology - Prof Sudheer Kher, Prof TV Rao & DrHerpes virus