官方APP下载:英语全能特训(微信小程序版,支持苹果手机、安卓手机)
创办于2003年
UNSV记不住?那就记中文谐音“忧安思危”吧!
  Slow and Steady Wins the Race!
UNSV英语学习频道 - Slow and steady wins the race!

英语全能特训(微信小程序)
UNSV英语学习频道淘宝网店
客服短信:18913948480
客服邮箱:web@unsv.com
初级VIP会员
全站英语学习资料下载。
¥98元/12个月

HEALTH REPORT - Circumcision May Lower Men's HIV Risk by More Than First Reported

阅读次数:


VIP会员专享下载:(非VIP会员无权下载!如果想下载,但还不是VIP会员,请点此订购
下载方式:使用鼠标右键(注意是鼠标右键!)点击下面的MP3音频/MP4视频链接,然后选择“另存为…”。
MP3节目录音 MP3节目录音  PDF节目文稿 PDF节目文稿 
文章正文
同步字幕

This is the VOA Special English Health Report.

In December, we told you about two important studies of circumcision and HIV, the virus that causes AIDS. Scientists had reported that circumcised men in Africa reduced their risk of HIV infection from sex with women by about half.

Now, researchers are saying the reduction in risk may be greater than that.

The studies took place in Kenya and Uganda. The National Institutes of Health in the United States halted the work early. Officials said the results were so clear, it would have been wrong not to offer circumcision to all the men in the study groups.

Last week, the British medical magazine The Lancet published the final results of the two studies. The report also included findings from another study that took place earlier in South Africa. The researchers say the new results showed that circumcision could lower a man's HIV risk by as much as sixty percent.

Circumcision is the removal of the foreskin from the penis. Researchers have noted that HIV rates are generally lower in areas of the world where circumcision is common in babies or young boys. This fact alone does not prove anything. The studies were an attempt to confirm a direct link between circumcision and a reduced risk of HIV.

But how might circumcision reduce the risk? The experts at the National Institutes of Health say no one knows for sure, but there are several theories.

First, defensive cells on the surface of the foreskin may be less able to resist an attack by HIV than other cells. Also, the foreskin may serve as a barrier that prevents expulsion of HIV. And the environment of the foreskin may provide good conditions for the virus to spread.

Health experts involved in the studies say they hope circumcision will become one of the basic ways to fight AIDS. But they say it may be difficult to get men to have it done, especially if circumcision conflicts with their cultural beliefs. Other issues are cost and the availability of high-quality medical care. Since HIV can be passed through blood, unclean medical conditions might spread the virus.

Health experts also warn that while circumcision may reduce the risk of HIV, it does not offer complete protection.

And that's the VOA Special English Health Report, written by Caty Weaver. Our reports are online at www.unsv.com and our e-mail address is special@voanews.com. Please be sure to include your name and country. I'm Mario Ritter.

网友的学习评论(0条):
版权所有©2003-2019 南京通享科技有限公司,保留所有权利。未经书面许可,严禁转载本站内容,违者追究法律责任。 互联网经营ICP证:苏B2-20120186
网站备案:苏ICP备05000269号-1中国工业和信息化部网站备案查询
广播台