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2至7

2至7

2至7

2至7

2

The incubation period is typically 2 to 7 days , but can be up to 10 days.

疾病的潜伏期由 2 至 7 日不等，但亦可长达 10日。

3

What is the incubation period of the disease? The incubation period typically ranges from 2-7 days , but can last up to 10 days .

它的潜伏期有多长？答：潜伏期一般为 2 至 7 日，但可长达 10日。

4

The study observed 15 babies between 2 and 7 months old , that were being breastfeed for periods of 3 and a half hours on two different days .

这项研究观察了 15 例生后 2 至 7 个月大的母乳喂养婴儿，在不同的 2 天内各观察 3 小时半。

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