由于新型冠状病毒影响的严重性和全球性，要迅速研发一种有效疫苗，压力不可小觑。
Because of the serious and worldwide impact of the novel coronavirus, there is huge pressure to develop a working vaccine quickly.
结核病作为一种通过呼吸道传播的疾病，在没有有效疫苗的情况下，只有发现感染源是唯一有效手段。
TB as a disease transmitted through the respiratory tract, in the absence of an effective vaccine, only found the source of infection is the only effective means.
本发明提供了一种新尼古丁衍生物形式的半抗原，所述半抗原可适当地与合适的载体缀合以得到针对尼古丁成瘾的有效疫苗。
The present invention provides a hapten in the form of a novel nicotine derivative that may suitably be conjugated with an appropriate carrier to yield an effective vaccine against nicotine addiction.
阻碍了有效疫苗研发的一个主要问题是，如果免疫系统可以控制HIV感染，那么免疫系统如何控制艾滋病毒感染，还没有充分的认识。
A major problem inhibiting development of an effective vaccine is that it's not well understood how the immune system controls HIV infection, if at all.
Pate说：“彻底消除工作不仅仅局限于这一疾病，也包括提供有效疫苗，以预防这一重大疾病。 预防工作要取得成功，必须要依靠有效运行的卫生系统。
“The polio eradication effort is not only about polio—it is about delivering an effective vaccine to prevent a serious disease that depends on a functioning health system to succeed,” Pate noted.
一种新的流感疫苗以无痛的鼻喷剂接种，对儿童有效。
A new influenza vaccine, administered painlessly in a nasal spray, is effective for children.
对于农民来说，按常规来使用它则过于昂贵，而且由于它在接种疫苗后一个月才有效，所以在疫情爆发后才使用几乎没有什么帮助。
It is too expensive for farmers to use routinely, and since it is not effective until a month after vaccination, administering it after an outbreak begins helps very little.
现在，制药公司希望能在12到18个月内研制出有效的疫苗。
Now drug companies are hoping to create working vaccines in 12 or 18 months.
第二阶段仍然是测试疫苗的安全性，但主要是检测疫苗是否有效。如果第二阶段进展顺利，疫苗研发就可以开始第三阶段。
Phase 2 still tests the vaccine's safety, but it's mainly a test to see if the vaccine seems to work. If Phase 2 goes well, the vaccine can begin Phase 3.
疫苗接种是阻止新冠病毒传播的有效方式。
Vaccination is an effective way to stop COVID-19 from spreading.
减毒活疫苗被认为是最有效的，但有一个问题：一旦这些病毒苏醒，会发生什么？
The live-attenuated vaccine is considered the most effective, but there is a worry: what might happen once these viruses wake up?
到目前为止，接种疫苗是一种简单、安全并有效的方式，可以保护我们免受疾病侵害。
Vaccination is by now a simple, safe and effective way to protect us from the diseases.
虽然这种疫苗是安全的，但它可能不像预期的那样有效。
Though this vaccine is safe, it might not be as effective as it is expected to be.
如果我们能研制一种对所有流感病毒株都有效的疫苗，我们就可以预防年度季节性流感及偶见的流感大流行，就像其它那些疾病一样。
If only we could develop a vaccine that was effective against all strains of flu, we might prevent both annual epidemics and occasional pandemics like the one now under way.
尽管科学家还在研究导致这次猪流感的病毒株，专家们怀疑现有的季节性疫苗能否有效抗击它们。
Although scientists are still studying the swine-flu strain responsible for the current outbreak, experts doubt that existing seasonal vaccines can effectively combat it.
突然发病、显著症状、患者病情迅速恶化以及缺乏疫苗和有效治疗，常常引起受感染人群的巨大焦虑。
The sudden onset, dramatic symptoms, and rapid deterioration of patients, and the absence of a vaccine and effective treatment, invariably incite great anxiety in affected populations.
即使是一种非常有效的疫苗也需要同时配合使用药物，开展病媒控制，进行良好的监测与评价，以及有一个运转良好的卫生系统。
Even a highly effective vaccine will need to be supported by the simultaneous use of drugs, vector control, good monitoring and evaluation, and well-performing health systems.
欧洲医药局，类似于美国的食品药品管理局，它具有保证所有新开发的疫苗安全且有效的职能。
The European Medicines Agency, like its U.S. counterpart the Food and Drug Administration, has the task of ensuring any new vaccines are both safe and effective.
默克和葛兰素的发言人说所有证据表明疫苗是安全有效的。没有证据表明需要再加强注射一针。
Spokesmen for Merck and Glaxo say all indications are that their vaccines are safe and effective, and there is no evidence that a booster shot will be needed.
作为生产过程中使产品安全有效的组成部分，它也被用于特定疫苗的生产，例如，某些百日咳疫苗。
It is also used during production of specific vaccines, for example certain pertussis (whooping cough) vaccines, as part of the manufacturing process that makes the product safe and effective.
得益于公有、私有资金的投入，在小孩的嘴里滴两滴廉价且有效的疫苗，目前每年脊髓灰质炎的患者仅有1000人次了。
Thanks to a cheap and effective vaccine, administered by two drops into a child’s mouth and washed down with dollops of public and private money, the annual global number is now roughly 1, 000.
联合国儿童基金会执行主任CarolBellamy说：“在很多地方，以往众多家庭生活在担心因麻疹失去他们子女的恐惧之中，而现在他们受到有效且不昂贵的疫苗的保护。”
"In many places where families once lived in fear of losing their children to measles, they're now protected by an effective and inexpensive vaccine," said Carol Bellamy, Executive Director of UNICEF.
疫苗的有效性：研究结果表明如果HIV疫苗在预防HIV病毒感染上只有50%的有效率的话，人们接受接种的可能性将大大降低。
The effectiveness of a vaccine: The research showed people would be far less likely to take an HIV vaccine if it was only 50 per cent effective in protecting against HIV infection
尽管为了使疫苗更有效，有时会在疫苗中添加称为佐剂的物质，但是在美国出售的疫苗，包括2009h1n1疫苗，不含任何佐剂。
Although substances called adjuvants are sometimes added to vaccines to make them more effective, no flu vaccine sold in the United States, including the H1N1 2009 vaccine, contains any adjuvants.
根据《国际卫生条例(2005)》哪种黄热病疫苗有效、是否必须在缔约国指定的疫苗接种中心或经世卫组织批准的列入名单的疫苗接种中心进行接种？
What kind of yellow fever vaccines are valid under the IHR (2005) and must they be administered at a vaccination centre designated by the State or at a listed WHO-approved vaccination centre?
根据《国际卫生条例(2005)》哪种黄热病疫苗有效、是否必须在缔约国指定的疫苗接种中心或经世卫组织批准的列入名单的疫苗接种中心进行接种？
What kind of yellow fever vaccines are valid under the IHR (2005) and must they be administered at a vaccination centre designated by the State or at a listed WHO-approved vaccination centre?
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