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Widespread COVID vaccinations not expected until mid-2021
Published on: 2020-09-07
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vaccine 03The World Health Organization does not expect widespread vaccinations against COVID-19 until the middle of next year, a spokeswoman said on Friday, stressing the importance of rigorous checks on their effectiveness and safety.
 

None of the candidate vaccines in advanced clinical trials so far has demonstrated a “clear signal” of efficacy at the level of at least 50% sought by the WHO, spokeswoman Margaret Harris said.
 

Russia granted regulatory approval to a COVID-19 vaccine in August after less than two months of human testing, prompting some Western experts to question its safety and efficacy.
 

U.S. public health officials and Pfizer Inc said on Thursday a vaccine could be ready for distribution as soon as late October. That would be just ahead of the U.S. election on Nov. 3 in which the pandemic is likely to be a major factor among voters deciding whether President Donald Trump wins a second term.
 

“We are really not expecting to see widespread vaccination until the middle of next year,” Harris told a U.N. briefing in Geneva.
 

“This phase 3 must take longer because we need to see how truly protective the vaccine is and we also need to see how safe it is,” she added. This referred to the phase in vaccine research where large clinical trials among people are conducted. Harris did not refer to any specific vaccine candidate.
 

All data from trials must be shared and compared, Harris said. “A lot of people have been vaccinated and what we don’t know is whether the vaccine works...at this stage we do not have the clear signal of whether or not it has the level of worthwhile efficacy and safety...,” she added.
 

The WHO and GAVI vaccine alliance are leading a global vaccine allocation plan known as COVAX that aims to help buy and distribute shots fairly. The focus is on first vaccinating the most high-risk people in every country such as healthcare workers.
 

COVAX aims to procure and deliver 2 billion doses of approved vaccines by the end of 2021, but some countries that have secured their own supplies through bilateral deals, including the United States, have said they will not join.
 

预计到2021年中才会出现广泛的疫苗接种

世界卫生组织发言人Margaret Harris在日内瓦总部对记者说,预计到明年年中才会出现广泛的(针对新冠肺炎)疫苗接种。
 

据世卫组织称,目前全球有34种疫苗正在进行人体试验,其中142种候选疫苗目前处于临床前试验阶段。
 

Harris发表讲话的同一天,俄罗斯新冠疫苗的第一阶段和第二阶段临床试验的首次同行评议结果出炉。研究团队在《柳叶刀》上报告称两项为期42天的试验(每个试验均包括38名健康成年人)并未在参与者中发现任何严重的不良反应,并证实了候选疫苗引发了抗体反应。俄罗斯冠状病毒疫苗是世界上第一个获批用于公共使用的新冠疫苗。
 

尽管Harris没有提到俄罗斯疫苗,但他强调了安全和有效性的重要性。他说,三期试验“将需要更长的时间”,以便了解疫苗的真正有效性和安全性。

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