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heLLoword翻译官方下载中也有详细论述
Kinds of chain reaction "effects": BUTTERFLY, DOMINO, RIPPLE, SNOWBALL，详情可参考旺商聊官方下载
Women's health，推荐阅读WPS官方版本下载获取更多信息