US EUROPE AFRICA ASIA 中文
    China / Society

    Advanced blood testing methods urged as rate of HIV infections increases

    By Zheng Caixiong in Guangzhou and Wang Qingyun in Beijing (China Daily) Updated: 2014-06-26 07:09

    Though some Chinese cities now use advanced testing technologies and equipment to ensure the safety of donated blood, more support from local governments is vital, health experts said.

    According to a recent report by the central blood bank in Dongguan, Guangdong province, the number of blood donors diagnosed as HIV-positive has been rising in recent years.

    Ten of every 100,000 blood donors from 1999 to 2003 were diagnosed as carriers of the HIV/AIDS virus. But from 2008 to 2012, 34 of every 100,000 were carriers.

    The Dongguan report concludes that HIV/AIDS is beginning to spread among residents of the Pearl River Delta city.

    "The blood samples are immediately destroyed when the donors are diagnosed as HIV-positive," said Zou Wentao, deputy director of the Dongguan city center blood bank.

    But Zou cautioned that there is a period after a person is infected during which they won't test positive. This is called the "HIV window period" and it can last from 11 days to three months, depending on the testing agent and equipment.

    To ensure the safety of blood donations, cities such as Dongguan and Beijing have turned to advanced testing technologies such as nucleic acid amplification test, said Zou, who is also an expert at the blood quality control center of Guangdong province.

    "By using the NAT technology, HIV/AIDS can be diagnosed in six to 12 hours after the 11-day window period," Zou said.

    The testing agent is also widely applied to the diagnosis of hepatitis B and hepatitis C infections.

    "With the traditional testing method, which tests antigens or antibodies, the window period of HIV/AIDS is around three months. The window period is shortened to around 11 days with NAT, with which the existence of virus itself is also tested," he said.

    As a last line of defense, Dongguan has set up a blood quality supervision group, the first of its kind in the country, to conduct sample testing of blood from donation centers.

    Zou said advanced testing technologies serve as the primary guardian against infections, Zou said.

    Wang Hongjie, deputy director of the Beijing Red Cross Blood Center, agrees with Zou.

    In practice, NAT has proved most efficient in the detection of hepatitis B, a virus much more prevalent than HIV/AIDS in China, Wang said.

    "Since our center started the NAT test in 2011, most of the blood donations we have prevented from being used were HBV positive," Wang said.

    But the reagent used in the NAT test costs 80 yuan ($12.80) per person, much more expensive than the reagent used in the traditional method, which costs less than 20 yuan per person. To make up for the gap in costs, blood donation centers need government support to conduct NAT tests, Wang said.

    Contact the writers at zhengcaixiong@chinadaily.com.cn and wangqingyun@chinadaily.com.cn

    He Baoqi contributed to this story.

    (China Daily 06/26/2014 page4)

    Highlights
    Hot Topics
    ...
    中文字幕无码毛片免费看| 亚洲欧美日韩中文播放| 制服丝袜中文字幕在线| 伊人久久精品无码av一区| 中文字幕无码AV波多野吉衣| 无码日韩精品一区二区三区免费 | 蜜桃AV无码免费看永久| 中文字幕亚洲男人的天堂网络| 亚洲国产AV无码专区亚洲AV | 精品无码人妻一区二区三区不卡| 亚洲精品无码AV中文字幕电影网站| 久久亚洲国产成人精品无码区| 亚洲中文字幕无码不卡电影| 精品中文高清欧美| 永久免费无码网站在线观看个| 极品粉嫩嫩模大尺度无码视频| 日韩人妻无码一区二区三区久久 | 中文有无人妻vs无码人妻激烈 | 亚洲日韩AV一区二区三区中文 | 台湾佬中文娱乐网22| 少妇无码太爽了不卡视频在线看| 久久国产亚洲精品无码| 亚洲va无码手机在线电影| 中文字幕无码一区二区免费| 人妻无码中文字幕免费视频蜜桃| 少妇中文字幕乱码亚洲影视| 中文字幕无码久久久| 国产乱子伦精品无码专区| 97免费人妻无码视频| 精品成在人线AV无码免费看| 无码精品人妻一区二区三区免费看| 亚洲中文字幕无码久久2020| 在线播放无码高潮的视频| 亚洲色中文字幕无码AV| 2014AV天堂无码一区| 野花在线无码视频在线播放 | 亚洲AV永久纯肉无码精品动漫| 国产AV无码专区亚洲AV漫画| 人妻丰满熟妇AV无码区HD| 精品亚洲AV无码一区二区三区| 国产在线拍偷自揄拍无码|