The WHO says half of the world's population is at risk of malaria and of an estimated 247 million cases in 2006, 881 000 people died, mostly African children.

世界卫生组织说世界上有将近一半的人口有感染疟疾的危险，到2006年估计有2.47亿例感染，881000人死于疟疾，其中绝大部分是非洲儿童。

youdao

Disease is also a risk, as members of tribal groups that have been contacted in the past have died of illnesses that they have no defence against, ranging from chicken pox to the common cold.

疾病也是一个危机，正如过去曾经接触过的，都已经死于疾病的其他部落的成员一样，他们没有任何的疾病防御，从水痘到普通的感冒都一样。

youdao

Many children died very young from these diseases and others, and the weak and elderly were always at risk。

许多儿童因此夭折(也有其他原因)，年迈题弱的人也总是面临着它们的威胁。

youdao

The boy, who was on the "at-risk" register, died aged 17 months in 2007 with major injuries, including a broken back.

BBC: NHS 'lacking' on child protection

Those tailwinds have now died down, or risk doing so.

ECONOMIST: Argentina��s president

The risk was further increased if the woman's baby had restricted growth or died in the womb, or if the woman had pre-existing risk factors for cardiovascular disease, such as tobacco smoking.

BBC: NEWS | Health | Placenta clues to heart disease