男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

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: 出国| 灵台县| 仁怀市| 望奎县| 肥城市| 鹤山市| 泊头市| 攀枝花市| 东乌珠穆沁旗| 乌恰县| 布拖县| 洪湖市| 武清区| 图木舒克市| 灌南县| 浦北县| 霸州市| 贵州省| 宿州市| 沾化县| 石柱| 武川县| 历史| 台中市| 乌鲁木齐市| 囊谦县| 昌吉市| 冷水江市| 定西市| 绥江县| 乐山市| 陆丰市| 顺昌县| 高阳县| 平南县| 房产| 西盟| 图片| 乳山市| 阆中市| 西畴县|