It is a live vaccine which means it contains a weakened version of the chickenpox virus. As such, it is not recommended for those with a compromised immune system because of an illness like HIV or as a result of treatment such as chemotherapy.
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，这一点在WPS官方版本下载中也有详细论述
# Restore (stops container, rolls back, restarts)
Authors:Ryan Gibb, Patrick Ferris, David Allsopp, Thomas Gazagnaire, Anil Madhavapeddy