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.
Letter to the Norwegian authorities
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邹露璐总结发现，操作中的症结主要集中在两个环节：出生证明登记和落户登记。
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