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.
"We're going to get there in steps, continue to take down risk as we learn more and we roll that information into subsequent designs," Isaacman said told CBS News. "We've got to get back to basics."
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作為唯一參加三項自由式滑雪賽事的女性選手，此安排將使她錯失整日半管項目訓練。她向國際滑雪聯合會（FIS）申請額外訓練機會遭拒後表示：「這項決定令我失望，因其似乎違背奧運精神。」
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