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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2026-02-24 20:00老家县城，已经折叠成了两个平行宇宙罐头辰
Andrew Robinson reviews five of the best science picks.