综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

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 1994 - . 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
韶山市| 称多县| 易门县| 达日县| 九寨沟县| 凤阳县| 天门市| 玉龙| 五大连池市| 若羌县| 海原县| 贵德县| 合作市| 大田县| 准格尔旗| 昌乐县| 双流县| 集贤县| 屏东县| 赣州市| 综艺| 南昌市| 台东市| 舞钢市| 康保县| 齐齐哈尔市| 姜堰市| 晴隆县| 台湾省| 林西县| 郁南县| 济阳县| 秦安县| 保亭| 平利县| 珠海市| 准格尔旗| 余庆县| 平湖市| 凌云县| 高阳县|