Since 2003, the CDC has collected data on West Nile virus illness in mothers and infants during the breastfeeding period.
从2003年开始，CDC的工作人员就开始收集那些在哺乳期间的母亲和婴儿有关西尼罗河病毒致病的数据。
No boss will be able to force a woman to do a night shift or overtime in the ten weeks before her baby is born or during the breastfeeding period.
在孩子出生10周前和哺乳期间，任何一位上司都不能强迫女性去值夜班或加班。
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