Infants are the most cold-ridden group, averaging more than six colds in their first years.

婴儿期是最易感冒的时期，从出生到一周岁平均感冒六次。

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Infants are the most cold-ridden group, averaging more than six colds in their first years.

婴儿期是最易感冒的时期，从出生到一周岁平均感冒六次。

youdao