If they did, they could pass the virus to their infants, and they had a higher infant death rate than that of uninfected females.

即使雌性黑猩猩能够生育，她们也会将病毒传染给她们的婴儿，并且其婴儿死亡率比没有感染的雌性所生育的婴儿的死亡率要高。

youdao

You succeed (let us say), as modern medicine has succeeded, in enormously lowering the infant death-rate, not only in Europe and America, but also in Asia and Africa.

你成功了（我们假设），正如现代医学所做到的：婴儿死亡率不仅在欧美而且在亚非也大大降低了。

youdao

Objective: To probe into the causes of death of peripartal infant and the measures to reduce the death rate of peripartal infant.

目的：探讨围产儿死亡原因及降低围产儿死亡率的措施。

youdao

Situated downwind of a belt of incinerators in Saitama prefecture, the city has an infant death rate 40% to 70% higher than the average for the prefecture.

CNN: Warning -- this garbage is dangerous

He pointed out that in Sweden, rates of sudden infant death had - despite a fall in the early 1990s - returned to the same rate as in the 1970s.

BBC: NEWS | Health | Infant death 'doubts' challenged