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Chickenpox are caused by an infection with varicella-zoster virus (VZV), an herpes virus, that occurs mainly in childhood.

Varicella is highly contagious. If a family member has chickenpox, 80-90% of the other family members, who haven't yet had chickenpox, and thus have no antibodies against the virus, will be infected.

The patient are jnfectious from about 2 days before rash onset until as long as all lesions are crusted.

Pregnant women should avoid contact with people with varicella - especially when it's not sure if they already have antibodies.An infection of the fetus, especially before the 20th Week of pregnancy, can cause birth defects and miscarriage.

Author: Postertjack


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 - Uploaded at 17.01.2011
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