Vaccine against chickenpox (varicella) Please rate this page (bottom of page)

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Chickenpoxs are caused by the varicella-zoster virus. The condition is highly contagious and causes almost 100% of children in Europe and the United States to have had the disease during childhood. Infection is transmitted through air as well as by direct contact with persons who have chickenpox or elderly persons with Herpes zoster. Incubation time is 10-21 days. After infection, the virus stays in the body's nerve cells (sensomotrial ganglia) without causing symptoms (latent infection) until possible reactivation in the form of herpes zoster occurs at 10-20%.

  • Vaccine against chickenpox is not a part of child vaccination program in Norway
  • The vaccine can be given from the age of 9 months
  • The infection usually does not cause serious complications and leaves immunity lasting long, most often throughout life
  • The vaccine is so-called "living vaccine" and
    • Given to children who should not get sick due to other illness or have decreased immune system for immunosuppressive treatment
    • Those who have not had chickenpox, especially youths and women planning pregnancy (not to be given in pregnancy)
    • Do not administer in case of severe impaired immune system
  • Children vaccinated against chickenpox do not prevent the risk of herpes zoster later in life (Reference: Scott Schmid1, * and Aisha O. Jumaan).
  • Varilrix is ​​the current vaccine

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