It recognizes the country's regulatory capability to ensure vaccine safety, quality and effectiveness.

世卫组织认可中国在确保疫苗安全、质量和有效性方面的监管能力。

Experts have raised concerns about the vaccine safety as it has not entered phase 3 clinical trials.

专家们对疫苗的安全性表示担忧，因为它还没有进入第三阶段临床试验。

But it's hampered in part due to fears over vaccine safety, unfounded according to the scientific consensus.

但却因担心疫苗安全而受到了阻碍，但从科学共识的角度看，这种担心毫无根据。

But Matthew Daley, a pediatrician who studies vaccine safety at Kaiser Permanente's Institute for Health Research, disagrees.

但在凯撒永久健康研究所研究疫苗安全的儿科医生 Matthew Daley 则不同意该说法。

How are parents reacting, and what do we know about the vaccine's safety in this age group, Tanya?

他们的家长作何反应，我们对该年龄段的疫苗安全了解多少呢，Tanya？

So this group of doctors believes an independent review of data will help reassure Americans of a vaccine's safety.

因此，这些医生认为，对数据进行独立审查将有助于让美国人确信疫苗的安全性。

He told the Associated Press that scientists will advise the FDA on the experimental vaccine's safety and its effectiveness.

他对美联社表示，科学家将就这种实验性疫苗的安全性和有效性向美国食品和药品管理局提供建议。

I completely understand the worries around this, but remember, testing in animals is a proven way to ensure vaccine safety.

我完全理解对此的担忧， 但请记住，在动物身上进行测试是确保疫苗安全的一种行之有效的方法。

In phase 1 trials, a small group of individuals on the order of a few dozen are picked to establish a candidate vaccine safety, such as side effects as well as the upper and lower limits for vaccine doses.

在I期临床试验中，大约十几人经挑选后构成一组，用于确定候选疫苗的安全性，如副作用以及疫苗有效剂量区间等。

A recent gathering in a Quality Inn ballroom in rural Bradley, Illinois, offered a glimpse -- terrifying to most epidemiologists, thrilling to longtime vaccine " safety" activists -- of America's growing political divide over vaccinations and its implications for the nation's health.

最近，一场在伊利诺斯州布拉德利郊区的一家Quality Inn的舞厅里举行的聚会，让人们得以一窥美国在疫苗接种问题上的日益扩大的政治分歧，以及疫苗对国家健康的影响——大多数流行病学家认为这是很可怕的，而长期进行的疫苗“安全”活动的人士却感到兴奋。