The incidence of EHEC infections varies by age group, with the highest incidence of reported cases occurring in children aged under 15 years (0.7 cases per 100 000 in the United States).

不同年龄组的肠出血性大肠杆菌感染的发病不尽相同，所报病例的最高发病率发生在15岁以下的儿童中(美利坚合众国每10万病例中占0.7)。

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While regular joes in this age group should exercise cautious optimism, one group of young people is doing great - female pop singers aged 25 and under.

虽然普通的年轻人对未来应该持谨慎的乐观态度，不过有一群同龄人却已经成就非凡，即25岁以下的女歌手们。

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The government's main answer to long-term joblessness, the New Deal, has so far mainly been aimed at those aged under 25, and at those of that group who say they are seeking work rather than the inactive.

ECONOMIST: The economy

The group of five children, all aged under 12, were told to leave the water and warned by the fire service that flood water can hide dangerous hazards.

BBC: River Thames flood water levels 'stabilise'