infectious disease caused by the varicella-zoster virus, most commonly seen in children under ten. This virus, if reactivated in a person who has had chickenpox, can also cause shingles.

Yes, but such occurrences are uncommon. For most people, one infection appears to confer lifelong immunity.

Several vaccines exist, including a four-in-one jab combining the measles, mumps and rubella vaccine with the chickenpox vaccine. Single vaccinations are also available.

Chickenpox is contagious from two days prior to appearance of the rash till all the lesions are covered by a scab, which occurs usually by 4-5 days of the rash. However, the transmission is most likely within first two days before the appearance of the rash.

Chickenpox is a highly contagious disease. Following a case of chickenpox, upto 90% of susceptible children and adults who come in close contact with the case can develop infection. Therefore, when one child develops chickenpox, many susceptible children in the school and persons in the child's house develop the disease. Isolating the infected child and avoiding contact with him can prevent spread of infection.

Chickenpox presents with a characteristic rash. The rash first appears over the face, scalp or trunk. The rash initially consists of red / purple colored raised lesions (maculo-papular rash) which evolve into lesions filled with clear fluid. These lesions are called vesicular lesions. The fluid in these lesions then becomes hazy given the rash a characteristic blistered or pustular appearance.

Chickenpox is an infectious disease caused by the varicella-zoster virus, which results in a blister-like rash, itching, tiredness, and fever. The rash appears first on the trunk and face, but can spread over the entire body causing between 250 to 500 itchy blisters in unvaccinated persons. Prior to use of the varicella vaccine, most cases of chickenpox occurred in persons younger than 15 years of age and the disease had annual cycles, peaking in the spring of each year.

Serious complications from chickenpox include bacterial infections which can involve many sites of the body including the skin, tissues under the skin, bone, lungs (pneumonia), joints, and blood. Other serious complications are due directly to infection with the varicella-zoster virus and include viral pneumonia, bleeding problems, and infection of the brain (encephalitis).

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Chickenpox is a very contagious disease caused by the varicella virus. The virus usually infects children, however adults who were not infected as children can also become infected if exposed to the virus. Chickenpox is most common in late winter to early spring.

Figures show that, so far this year, 18,378 cases of chickenpox have been reported to Health Protection Scotland, a 30 per cent rise on the same period last year. Experts say chickenpox cases rise and fall in cycles.

The Joint Committee on Vaccination and Immunisation has commissioned an expert subgroup to look at all the scientific and medical evidence on chickenpox vaccines. They will provide their recommendations to all the UK governments to decide whether or not to start universal vaccination. Yes, surley kids getting a live virus jab would put others at more risk who came into contact with them after the jab.

There are about 3.9 million cases of chickenpox in the United States each year, with more than 95% of all people developing the disease. Cases occur most frequently in children from 6 to 10. Chickenpox can occur at any time throughout the year, but it's peak times are in the winter and the early spring especially in moderate climates.

You may remember from when you were a child just how itchy chickenpox can be. If your child scratches the blister before they are able to heal, they get infected, turn into small sores and possibly leave scars. Discourage your child from scratching but keep his or her fingernails trimmed short just in case. Oatmeal bath and calamine lotion, which you can buy without a prescription, can help relieve your child's itching.