Chickenpox is highly infectious and requires immediate quarantine measures once diagnosed. Usually, it takes about 2 weeks after the appearance of chickenpox for school to be suspended until the rash is completely crusted over. Chickenpox is a self-limiting disease with early onset of fever followed by rapid appearance of a rash 1-2 days later. In 1-2 days after the rash appears, the blisters gradually become cloudy and begin to dry and crust from the center, and the scabs gradually fall off in about 1 week, usually leaving no scars. The entire course of the disease lasts about 10 days, and is contagious from 2 days before the onset until the rash is completely crusted over, so it should be isolated until the rash is completely crusted over, which takes about 2 weeks to avoid infecting others. The actual fact is that you will be able to get a lot more than just a few of these.