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Chickenpox is very contagious from about two days before the rash appears until all the blisters are crusted over.
“A child with chickenpox should be kept out of school until all blisters have dried, usually about one week,” advises Giselle Namazie, M.D., internist in UCLA’s Westlake Village office. To help keep the virus from spreading to others, make sure your child washes his/her hands frequently and is kept away from others as much as possible.
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