世界各地的医生都对老年人、孕妇和心脏病患者的风险发出了警告。
Doctors around the world have warned of risks to elderly people, expectant mothers, and people with heart conditions.
只有孕妇和其他一些易感人群才去看医生。
Only pregnant women, and other vulnerable groups, should bother their doctors.
世卫组织还建议特别关注孕妇和幼儿预防问题。
WHO also recommends a special focus on preventing pregnant women and young children.
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