Chickenpox is a viral disease caused by the Varicella-zoster virus which is a DNA virus that is a member of the herpesvirus group. The virus undergoes a lysogenic cycle in which the virus replicates its DNA to make new virus particles. The varicella-zoster virus is spherical in shape. Chickenpox’s history has various contributors. Several corpses have been found with chickenpox as the apparent cause of death. In the 1500s, an Italian physician Giovanni Filippo gave the first description of varicella in literature and clearly distinguished it from scarlet fever; he is also known for other several important contributions to medicine, anatomy, and virology. In the late 1600s, English physician Richard Morton gave the name chickenpox to what he thought was a milder form of smallpox. Another English physician, William Heberden, undertook the first independent study of the disease in 1767, and he proved that chickenpox was actually different from smallpox. Since then much more information has been learned about chickenpox. Varicella is highly contagious. The virus spreads in the air when an infected person coughs or sneezes; there are droplets with the virus in the air. The incubation period for varicella is 14 to 16 days after exposure to a varicella rash, with a range of 10 to 21 days (“Clinical Overview”). Chickenpox displays several symptoms, but they can vary from person to person.
The most common symptom is an uncomfortable, itch rash of red blisters scattered
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Herpes zoster goes back a long time but scientists were unable to tell the difference between the blistering caused by small pox, and shingles until now. Where shingles started was first talked about in 1831, when Richard Bright, a scientist, believed the dorsal root ganglion, or the spinal ganglion was what carried the disease. In the late 18th century William Heberden found a way to differentiate between shingles and small pox, and then in the late 19th century shingles was differentiated from another disease called erysipelas. In the beginning of the 20th century it was the first time scientists realized that the same virus was causing chickenpox and shingles. Shingles was thought to be not dangerous in the 1940s and harmful side effects were thought to be scarce. When 1942 hit scientists started to recognize that when adults got shingles it was more dangerous than when a child had it, and the harmful effects of shingles increased as you got older. More studies in the 1950s on people with the shingles virus showed that scientists were wrong about the virus being harmless, and so they started looking for ways to prevent the virus. In 1965 Dr. Hope-Simpson was first to suggest that contact with children who had chicken pox would boost the cells immunity to help postpone or suppress shingles. An experimental drug called Zostavax was created to fight against shingles in 2005. The drug was later FDA approved in 2006, it is too early to tell if the drug works,
Prior to reading the article I had an idea of what shingles was, and heard some information regarding the epidemic of shingles, but never knew exactly what it was. While reading the article I discovered that shingles is a viral infection caused by the reactivation of the varicella zoster virus, which is actually the same virus that produces chickenpox that produces a painful skin rash within the host. Since shingles is a part of the herpes family it usually appears as a strip of blisters anywhere on the body.
The incubation period for chicken pox is 2-3 weeks (Bishop,P et al. 2010), this is the contagious time before the signs and symptoms start showing, which means the nurse’s daughter, was past the infectious period of the disease. The nurse’s daughter could have had the virus for over a week, and exposed her mother to it during this time. If the nurse developed symptoms a few days after getting Varicella Zoster Immunoglobin, she had already contracted the virus before immuniglobin injection had been administered, thus not able to prevent chickenpox in this case.
Varicella zoster virus is the same virus that causes chickenpox. Therefore, if a person has previously had chickenpox at younger age they are more likely to get Shingles because that same virus is dormant in their body. The virus stays dormant around the nerve tissue of spinal cord for a long time after the person have had chickenpox. The shingles virus can
Varicella or other known as the chickenpox vaccination. The chickenpox vaccine is a shot that can protect nearly everyone who gets it from catching chickenpox. It 's also called the varicella vaccine because chickenpox is caused by the varicella-zoster virus. The vaccine is made from a live but weakened, or attenuated, virus (Children 's Vaccines Health Center). This vaccine is mainly for children and adults who have not had chickenpox before. There’s no need for the vaccine if you have already had them.
Varicella-Zoster Virus (VZV) causes the infection of chickenpox, but you are more likely to get infected by touching someone that already has the disease. The disease can spread by: saliva, coughing, sneezing, and contact with the fluid from the blisters.
Smallpox is caused by the variola virus an extremely contagious disease. That can be spread through any type of contact with the virus. The virus is a member of the genus Orthopoxvirus, in the Poxviridae family. Smallpox has been considered eradicated in the United States since 1972. Virologists have speculated that it evolved from an African rodent poxvirus 10 millennia ago. The name is derived from the Latin word for "spotted" and refers to the raised bumps on the face and body of the patient. (Medscape.com) Smallpox has been to blame for the extinction and almost extinction of many cultures. The disease has been used as biological warfare since the beginning or war. At times,
Shingles are more likely to show up in adults who have had the chickenpox in their childhood. The shingles are caused by a viral infection known as the varicella-zoster virus. This virus is part of a group of viruses called herpes viruses (herpes zoster). Although shingles is part of this group, it is not the same in that it is not a virus that is responsible for sexually transmitted diseases. Shingles can be very painful and cause many types of infections, but it is not life-threatening and it is treatable.
Chicken Pox is a virus caused by varicella-zoster, a member of the herpes family. This same virus also is a cause of herpes zoster other known as shingles in adults. Chicken pox is very contagious and can easily spread to people. Chicken pox is acquired by coming into contact with the fluid of a chicken pox blister, or airborne by an infected person sneezing near you. The blister-like rash usually lasts five to ten days. The incubation period lasts 10-21 days and a person with chickenpox becomes contagious one to two days before their blisters appear. The person with chicken pox remains contagious until all the blisters have crusted
Yellow fever sets in quickly, often after an incubation period of less than a week. The infection is initially mild before moving to the acute phase, at which point symptoms will become more severe for a few days. Many patients will recover after this, although
Chickenpox is a viral infection caused by the Varicella Zoster Virus (VZV) transmitted via the respiratory route that causes itchy, blisters-like rashes usually lasting about 5-10 days. It is highly contagious transmitted by person to person contact (direct) from respiratory secretions or indirectly through contact with airborne respiratory droplets, via soiled inanimate objects infected by discharge from skin lesions, vesicle discharges or nasopharyngeal secretions. The incubation period lasts about 10-21 days and the disease is communicable 1-2 days