年龄是易患感冒的一个重要因素。美国 Michigan 大学公共卫生学院的一项研究揭示了普通民众所具有的一些特性,其中婴儿是感冒的最易感人群,平均1周岁前要患6次以上感冒,3岁之前男孩比女孩更易患感冒,3岁后女孩则比男孩易患感冒,十多岁的男孩平均每年感冒两次,而女孩则可达3次。 Age is a predisposition to a cold. A study by the School of Public Health at the University of Michigan reveals some of the characteristics that ordinary people have, of which babies are the most susceptible to the common cold and have an average of 6 or more cold episodes by the age of 1, and boys are more susceptible to cold than girls by the age of 3 Girls are more susceptible to colds than boys after 3 years of age, teenage girls are caught colds twice a year on average, and girls up to 3 times.