【Native Speaker每日综合训练—39系列】【39-17】 科技 Drug resistance

疏离无罪

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Speaker: NARMS's data showed that most of our meat have drug-resistant bacteria.So remember to cook all kind of meat before you eat it.

01:04
At least 23000 people died for antibiotic-resistant infections in america every year.And some scientists said the number is even underestimated.

01:27
Antibiotic resistance microbes are serious threat to human beings.Antibiotic-resistance often arises when commercial antibiotics kill good bacteria that protect the body from infection bacteria that cause illness.
Americans used more antibiotics than acctually needed.

01:14
CDC’s prescription for combating these infections has four main components.And according to the 2014 budget,these plans may cost lots of money.

01:23
Drug resistance makes the so-called targeted cancer therapies stop working.Scientists are analyzing the mechanism under the resistance to invent new drugs or drug combination to fight cancers.

01:06
Althought the mechanism is still unclear,scientists are optimsitic about the results which will help scientists figure out more effective drug combinations.But they have problems in getting enought samples to study.

05:45
The abuse of antibiotics have led to bacteria evolving resistance to many medications.Nanotechnology is one way of avoiding and dealing with the problem.But the mechanism that allow nanoparticles to kill bacteria pose a risk to the very people they are intended to protect because of its toxic effect.
Scientists are trying to creat safer nanoparticles.A kind of nano droplets which they called nanobombs can kill bacteria on surfaces.Thought this can not completelu kill bacteiras,it's still a success to people.And this nanobombs can be a personal bug shield.Further test and study are still needed.The toxicity and safety test are main things those scientists need to do.