题目:Device Finds Malaria Infections in Seconds
Hello, and welcome to As It Is, from Learning English. Im Steve Ember in Washington.
Today on the program, we have two health related stories, one of them is about antibacterial soaps. United States officials recently called on makers of these product to prove that they are more effective than normal soap and water.
But first, researchers have developed a medical device which they say can find malaria infections in the human body. The laser beam scanner is the first device that can find the sometimes-deadly disease without going inside the body. Christopher Cruise has more.
Device Finds Malaria Infections in Seconds
The test is painless, does not need blood from a person, and appears to be right every time it is done.
At the present time, a trained medical worker needs costly equipment, a persons blood and a lot of time to know if a person has been infected with malaria. Trained workers, equipment and time are not always available in poor parts of the world.
The newly-developed device only needs a person to place a finger on a laser device.
Dr. Dmitri Lopotko is a researcher at the department of biochemistry and cell biology at Rice University in Houston, Texas.
We shine a very short light pulse through the skin. And this light pulse is absorbed only by malaria parasites because of the wavelength we use. And in response to this short light pulse, the parasite literally explodes.
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