日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
World
Home / World / Europe

Booster doses of current vaccines may not be enough: WHO

Xinhua | Updated: 2022-01-12 10:16
Share
Share - WeChat
A health officer administers COVID-19 vaccine jab to a local at Kencom bus stage in Nairobi, capital of Kenya, Dec 29, 2021. [Photo/Xinhua]

GENEVA - The World Health Organization (WHO) said Tuesday that current COVID-19 vaccines may need to be updated if they are to provide continued protection against emerging variants, including Omicron.

WHO's Technical Advisory Group on COVID-19 Vaccine Composition (TAG-CO-VAC), a group of 18 experts, said that although current vaccines provide a high level of protection against severe disease and death caused by Variants Of Concern (VOC), future vaccines that can prevent infection and transmission need to be developed.

In the meantime, the composition of current COVID-19 vaccines may need to be updated in order to protect against the evolution of the virus.

Such updates need to be based on strains that are genetically and antigenically close to the circulating variants. They should also elicit "broad, strong, and long-lasting" responses in order to "reduce the need for successive booster doses," WHO said.

The experts have encouraged COVID-19 vaccine manufacturers to provide data on the performance of current and Omicron-specific vaccines, to help decide when changes to vaccine composition may be required.

Regarding the current Omicron variant, the experts emphasized the importance of wider global access to current COVID-19 vaccines.

Most Viewed in 24 Hours
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 国产伦精品一区二区三区高清 | 三更饺子1最刺激的一段整集 | 午夜手机福利 | 艹逼免费视频 | 香港三级台湾三级在线播放徐 | 久久久精品一区 | 国产网站在线 | 奇米第七色| 久草网站| 久久se精品一区精品二区 | 成人精品视频一区二区三区尤物 | 日本一区二区三区免费观看 | 国产欧美高清 | 天天干天天干 | 一区二区三区日本在线观看 | 国产精品视频一区二区三区不卡 | 国产中文字幕网 | 日本色图视频 | 日韩美女一区 | 一级片视频网站 | 国产在线精品一区二区三区 | 色黄视频在线观看 | 新封神榜杨戬电影免费动画在线观看国语 | 亚洲国产七七久久桃花 | 黄在线观看+在线播放 | 国产成人精品午夜 | 曰本一级毛片免费 | 五月天激情视频在线观看 | 国产一级性生活视频 | 日本一级大毛片a一 | 国产高清在线视频 | 综合久久久久 | 日韩精品一区二区三区中文3d | 亚洲精品国偷拍自产在线观看 | 亚洲精品久久久久综合中文字幕 | 久久艹逼 | 日韩欧美二区在线观看 | 男女一进一出视频 | 色欲AV色情国产又爽又色 | 日本视频在线 | 亚洲精品日韩在线 |