无码少妇一区二区三区免费,妓院一钑片免看黄大片,国语自产视频在线,亚洲AV成人无码国产一区二区,激情久久综合精品久久人妻,日韩免费毛片,综合成人亚洲网友偷自拍,国内自拍视频在线观看,欧美熟妇性xxxx交潮喷,国产成人精品一区二免费网站

Vietnam to release anti-dengue mosquitos

Source: Xinhua| 2018-01-15 13:19:02|Editor: Lifang
Video PlayerClose

HANOI, Jan. 15 (Xinhua) -- Vietnam will next month start releasing mosquitos laced with Wolbachia - a common kind bacteria capable of preventing Aedes aegypti mosquitoes from becoming infected with dengue virus, meaning that the mosquitoes cannot transmit the virus to humans.

Wolbachia-laced mosquitos will be released in Vinh Luong commune, Nha Trang city, central Khanh Hoa province in 12-18 weeks starting in March, according to Vietnam's Health Ministry on Monday.

Earlier, a research group from Vietnam's National Institute of Hygiene and Epidemiology and Australian scientists bred Aedes aegypti mosquitos laced with Wolbachia and then released them on a trial basis on Tri Nguyen island in Khanh Hoa in 2013 and 2014.

Since 2014, no dengue fever outbreaks have been detected on the island, while Nha Trang and Khanh Hoa have reported big outbreaks of the disease.

When male and female Aedes aegypti mosquitoes with Wolbachia are released over a number of weeks, they then breed with the wild mosquito population, passing the bacteria from generation to generation.

Over time, the percentage of mosquitoes carrying Wolbachia grows until it remains high without the need for further releases. Mosquitoes with Wolbachia are less able to transmit diseases to people, so the risk of outbreaks in these areas is reduced.

Vietnam spotted 175,800 dengue fever patients, including 38 fatalities, and 39 Zika sufferers last year, said the ministry's Preventive Medicine Department. Zika is a virus spread to humans by Aedes mosquitoes - the same mosquitoes that spread dengue, chikungunya and yellow fever.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011100001368965371
少妇邻居内射在线| 国产高潮精品一区二区三区av| 精品人妻二区中文字幕| 丝袜美腿一区二区在线观看| 国产无遮挡猛进猛出免费软件| 国产高清不卡视频| 久久亚洲精品11p| 亚洲va久久久噜噜噜久久天堂 | 国产在线欧美日韩一区二区| 波多野吉衣亚洲Av无码| 色猫咪av在线网址| 亚洲熟妇真实自拍另类| 亚洲乱码精品久久久久..| 久久精品免视看国产成人| 亚洲一区无码精品色| 亚洲AV色香蕉一区二区蜜桃小说| 亚洲精品国男人在线视频| 久久婷婷人人澡人人爽人人爱 | 精品国产迷系列在线观看 | 午夜成人精品福利网站在线观看 | 亚洲国产成人av国产自| 老师破女学生处特级毛ooo片| 中文字幕一区二区久久综合| 久久精品国产亚洲片| 玩中年熟妇让你爽视频| 久久久国产成人一区二区| 伊人久久精品一区二区三区 | 国产老熟妇精品观看| 亚洲欧美日韩精品久久| 久久精品国产精品国产一区| 亚洲中文字幕乱码电影| 欧洲美熟女乱又伦AV影片| 成人h动漫精品一区二区樱花动漫| 亚洲欧洲日韩综合| 51午夜精品免费视频| 久久www免费人成—看片| 久久精品国产热久久精品国产亚洲 | 国产精品一区二区三区卡| 久久精品无码专区免费| 国内不卡的一区二区三区| 亚洲国产成人久久精品app|