The virus is dormant in the bone marrow cells, she said, but when those progenitor cells develop into blood cells, it can be reactivated and cause renewed infection.
她说，艾滋病毒平时蛰伏在骨髓当中，不过当这些祖细胞变成血液细胞时，病毒就会被激活，从而造成病人的再度感染。
Anyone who once had chickenpox is at risk of shingles since the virus may become reactivated years after the initial infection.
由于这种病毒可能会在首次感染后数年内重新复活，故任何曾出过水痘的人都有发生带状疱疹的风险。
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