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Tuesday, February 22, 2011

Children's Health Care

Dear parents, a few of the children at the kindergarten are having chickenpox.Kindly read the articles and do the necessary if your child shows any symptoms of having the infectious disease. 

Chickenpox chickenpox; varicella; zoster; blister; shingles; infectious; virus; vaccine; vaccination; immunisation; immunise; pregnancy; baby; rash; reye's; reye; reyes; syndrome; aspirin;
Chickenpox is a common, very contagious viral infection that over 90% of people get during childhood unless they have been immunised. After an infection, some of the virus may stay in the body (in nerve cells) and at some later time the virus can become active again causing shingles. A vaccine is now available to protect children and adults against chickenpox.

What is chickenpox?
  • Chickenpox is caused by a virus called Varicella Zoster Virus.
  • Most children who get chickenpox have a mild illness, but some can become quite ill. Usually adults who get chickenpox have a more severe illness.
  • The illness with chickenpox usually lasts about 7-10 days.
  • The illness may start with a fever and feeling unwell, like having a cold. In some children the first sign of the infection is the rash.
  • The rash usually starts on the chest, and most spots appear on the chest and head (including in the hair), although some children and adults can have spots all over the body (rarely on the palms of the hands and soles of the feet).
  • The spots start as red, itchy lumps, which then become blisters. The top comes off of the blister and watery fluid escapes. Then a crust forms on the spot. This crust takes about 5 days to fall off.
  • The spots often come in waves for several days so that there will be new lumps, blisters and crusting sores on the skin at the same time.
How is chickenpox spread?
  • The infection is spread when the person sneezes or coughs, or when someone touches the fluid in the blisters. It can also be spread by touching something that has touched the fluid from the blisters (eg a dressing which covered the sore).
  • Chickenpox can be caught from the fluid in the blisters of someone with shingles, though this is rare.
  • The person with chickenpox is contagious from the beginning of the illness (up to 2 days before the spots appear) until about 5 days after the first spots appear. So long as there are no new blisters or moist crusts on spots, the person will not be contagious even if there are still crusts on the skin.
  • Chickenpox is very contagious (easy to catch). Over 90% of close contacts (such as other family members) will get chickenpox if they have not already had it or not been immunised.
How long does it take to develop?
  • Chickenpox usually takes around 14-15 days to develop after contact with someone who has it (range 10 to 21 days).
Keeping children away from school or child care
A child should be kept at home for 5 days after the first spots appear, or until all blisters are dry if this takes longer. Some scabs will still be there but as long as they are dry the child does not need to be kept out of school, or away from others.
Health problems from chickenpox
  • For most children chickenpox is a mild illness, however some can have spots over the whole body, including in the mouth and in the genital area. They rarely may have encephalitis (infection of the brain). They may be quite unwell from this, but will usually recover fully.
  • The spots are very itchy, and scratching can cause a bacterial infection (the same as impetigo, or school sores). An infected spot is more likely to leave a scar. (Note: the spots are very itchy. Expecting children not to scratch is usually too much to ask of them).
  • Adults usually have a more severe illness, and a few get pneumonia, and some will die from the infection (this is rare, about 3 people in 100,000 healthy people with the infection die from it).
  • Chickenpox can be a fatal illness for people who have immune problems (eg with HIV/AIDS, treatment for severe asthma or cancer.) All these people need to be seen by a doctor urgently if they are in contact with chickenpox. There is a treatment which will protect them from the severe effects of the infection if they get the treatment soon after coming in contact with it.
Chickenpox in pregnancy and newborn babies
  • If a pregnant woman gets chickenpox during the first half of a pregnancy, there is a small risk that the unborn baby may be affected (less than 2%). Some of the effects include scarring, and birth defects.
  • If a woman gets chickenpox from 5 days before delivery to 2 days after delivery, it is estimated that there is up to 30% risk that the baby will develop a severe infection. Many of these babies will die from the infection.
  • Pregnant women should see their doctor as soon as possible if they have been in contact with chickenpox and are not certain that they have had chickenpox. There may be a treatment which could protect them if they are seen within 96 hours of exposure.
What parents can do
  • There is no specific treatment available which affects how bad the chickenpox is or how long it lasts. People who have other severe health problems affecting their immune system may be able to get some anti-viral medications.
  • Give the child plenty of drinks and give paracetamol or ibuprofen if needed, for fever and pain (see the topic 'Using paracetamol or ibuprofen').
  • If blisters are in the mouth don't give food or drinks that have a lot of acid or salt. (Orange juice is acidic, try pear juice instead. Ice-cream and jelly are often accepted.)
  • You can get soothing mouth washes from a chemist.
  • Soothing lotions or oils that reduce itch can be used. See your pharmacist for advice about which ones to use and how they are best used. Some oils are added to cool baths. Sodium bicarbonate or oatmeal in the bath can also help soothe the itching.
  • Anti histamine medicines can help with the itch. Talk to your doctor or pharmacist about this.
  • Never give aspirin to children with chicken pox - there is an increased risk of a serious illness known as Reye's Syndrome if a child under 16 years takes aspirin when they have chicken pox or some other viral infections such as influenza.
  • Reye's syndrome is a rare illness causing severe damage to the brain and liver, and it is often fatal even when the child is given intensive care.
  • It is recommended  that children be immunised against chicken pox when they are 18 months old or when they are between 10 and 14 years old if they have not had chickenpox already or been immunised against it. 
  • The vaccine is also particularly recommended for people in 'high risk' jobs such as health care, child care and teachers. Also for non-immune women before pregnancy and non-immune family members of people with immune system disorders. The vaccine may not be free for these people.
  • The vaccine should not be given during pregnancy, however no problems have occurred yet when women have been given the vaccine accidentally while pregnant.
  • Some people may still catch chickenpox after immunisation (only about 70% to 90% of people get fully protected), but the illness will be milder than if no immunisation had been given.
Effects from immunisation
  • Side effects are uncommon in healthy people.
  • About 20% of children and adults will get some soreness at the site of the injection, 5% or less will get some fever and less than 5% will get a rash.
High risk situations
  • Medications such as acyclovir can be effective to treat chickenpox in people with damaged immune systems such as people with cancer or HIV/AIDS.
  • If a pregnant woman has been exposed to chickenpox, and she has not already had the infection, she can, if needed, be given Zoster Immunoglobulin to give her temporary protection against the illness. This can be used for some other high risk people.
  • Chickenpox vaccine can be used after exposure to chickenpox. It needs to be given as early as possible after exposure (within 3 days is best).

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