www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Top Stories

Stronger precautions are urged for bird flu

By Wang Xiaodong | China Daily | Updated: 2017-03-24 07:31

Two international organizations have stressed the high possibility of human-to-human transmission of the H7N9 virus, which saw the biggest outbreak in China over the past winter since first being reported in China in 2013.

The organizations urged the Chinese government to take more precautionary measures to prevent a possible bird flu epidemic.

"Experts agree that it is not a question of if, but when the virus will adapt in ways that facilitate efficient, sustained human-to-human transmission," according to a joint statement on Thursday from the World Health Organization and the United Nations Food and Agriculture Organization.

There was no evidence of sustained human transmission of the virus, but H7N9 has continued to change, the statement said.

Researchers recently identified two separate genetic lineages of H7N9, adding complications to the making of candidate virus vaccines, the first step in developing vaccines for birds and humans, it said.

The University of Hong Kong said on Wednesday that its researchers had identified a mutation in H7N9 avian flu that can enhance its ability to infect humans.

In February, the Chinese Center for Disease Control and Prevention said H7N9 had mutated to a new strain in South China, which did not affect the virus's ability to spread between humans but made it more dangerous among poultry.

China reported 352 human cases of H7N9 in the first two months of the year, resulting in 140 deaths, according to the National Health and Family Planning Commission.

"We have a short window of time - before the next seasonal outbreak in winter - to get ahead of the virus and prevent a SARS-type event," the joint WHO-UNFAO statement said, adding that during this short window, policymakers need to have immediate intervention steps ready to control the virus.

"This may involve a mix of market closures and poultry vaccinations as a requirement for market access," it said, adding that over 90 percent of reported cases involved individuals in direct contact with live poultry or a market selling live poultry.

Once a problem is identified, the intervention steps need to be fully implemented before the next seasonal peak, which is during the Chinese New Year holiday, it said.

Chinese authorities have taken measures since winter, such as closing live poultry markets, to control and prevent the virus.

Live poultry markets in Changsha, the capital of Hunan province, were suspended for three weeks beginning March 17, according to the city's health commission.

In Anhui province, most cities and counties have closed live poultry markets since February, local media reported.

The WHO-UNFAO statement said China needs to intensify enforcement of the closure of live poultry markets to eliminate the threat.

Sporadic cases of bird flu may last until late April, according to the China CDC. Currently, there is no vaccine for the virus, but several Chinese companies have received approval from the China Food and Drug Administration for clinical trials of vaccines.

Premier Li Keqiang said in February that China will promote business models that feature large-scale farming, centralized slaughtering and cold-chain transportation, including the keeping and selling of poultry in chilled conditions, to prevent similar poultry-related disease outbreaks.

wangxiaodong@chinadaily.com.cn

Editor's picks
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: 欧美性色生活免费观看 | 国产码一区二区三区 | 收集最新中文国产中文字幕 | 欧美日本在线视频 | 国内精品久久久久久久星辰影视 | 国产欧美一区二区三区视频 | 俄罗斯黄色毛片 | 欧美精品v欧洲精品 | 日韩一级免费视频 | 亚洲国产精品大秀在线播放 | 久久久免费观成人影院 | 日韩午夜在线 | 国产区一区二 | 亚洲不卡视频在线观看 | 91精品国产免费 | 午夜丝袜美腿福利视频在线看 | 欧美xxxxbbb| 国产午夜爽爽窝窝在线观看 | 午夜综合| 欧美成年人网站 | 91网站在线免费观看 | 精品精品国产高清a毛片 | 91精品国产高清91久久久久久 | 99视频在线免费 | 欧美性色欧美a在线播放 | 男女午夜爽爽 | 特级片在线观看 | 国产va精品网站精品网站精品 | 网红主播大尺度精品福利视频 | 国产精品亚洲二区 | 日本不卡一二三区 | 亚洲图片国产日韩欧美 | 男人桶女人逼 | 波多野结衣在线免费观看视频 | 特黄特色三级在线观看 | 99久久精品视香蕉蕉er热资源 | 久草福利资源在线观看 | 三级视频在线播放线观看 | 免费一级a毛片在线播 | 日本三级毛片 | 在线观看日韩www视频免费 |