在线词典,在线翻译

世卫组织督促禁用血液检测方法诊断结核病

所属:听力板块 来源:voa 阅读:2406 次 评论:0 条 [我要评论]  [+我要收藏]

小编摘要:世卫组织督促卫生官员禁用市面普遍的血液检测方法诊断结核病。在两项研究发现常用血液检测结果不可靠并存在误导性后,世卫组织官员做出了这一决定。

WHO Urges Ban on Blood Test for Tuberculosis

 

The World Health Organization is urging health officials to ban commonly-available blood tests for tuberculosis. W.H.O. officials made the call after two studies found that results from a commonly used test are undependable and misleading.

The blood tests are low-cost and produce fast results. They are widely used in developing countries, especially India. The Indian government says the country has more than two million new cases of TB a year.

But, researchers say the tests being sold are dangerously inaccurate. They say the results are wrong in fifty percent of patients.

David Dowdy studies infectious diseases at the Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland. He led one of the studies.

DAVID DOWDY: "These tests are actively doing people harm by causing them either to take medicines that they don't need or delaying the diagnosis that they actually do need, to get better."

 Traditional tests for TB examine the sputum, a material found in a person's lungs. Active TB is identified if certain bacterium grows in the test material. However, these tests take longer to carry out. Dr. Dowdy says the blood tests are widely used because of the speed of results. 

DAVID DOWDY: "What these tests do is they measure antibodies in the blood against TB so anytime anyone has been infected with TB at any time in their life, they will develop antibodies. The problem is that one person's antibodies are not going to be the same as another person's antibodies. And we don't have a test yet that can detect these antibodies across the board."

The leader of the other study was Madhukar Pai, an epidemiologist at McGill University in Montreal, Canada. He says the tests are usually used by private medical centers -- not government TB control programs.

MADHUKAR PAI: "So these tests are uniformly not used in the developed world. They are mostly used in countries with weak regulation, and lack of regulation allows these sorts of tests to be on the market and used freely."

Experts say the blood tests are a big business in developing countries, worth millions of dollars a year. The World Health Organization says a million of the tests are done every year. But, the tests are not approved by any recognized supervisory group.

Dr. Pai also says the WHO is pushing scientists to continue research for a quick test. 

MADHUKAR PAI: "[Be]cause someday we want a simple dipstick-like test for TB, as we have for HIV and malaria. But right now we don't have such a test for TB for point of care use."

 

 

标签:voa健康
0
2011-08-17 11:22 编辑:pliny
分享到:
关注海词微博:
发表评论:
表达一些您的想法吧!已有0条评论>>
登录,再发表评论
文明上网,理性发言!
>>精华推荐阅读
热门评论文章