In recent years, the increasing number of resistant strains has caused alarm.

近年来，越来越多的耐药菌株引起了人们的警觉。

Overusing antibiotics can create resistant strains of germs, which then require even stronger and more expensive antibiotics.

过度使用抗生素会增强细菌的抵抗力，那样会导致患者需要药性更强，价格更贵的抗生素来医治。

Also, new drug resistant strains of TB have arisen, often making treatment difficult and painful and sometimes ineffective.

由于肺结核对新药的抗药性加强，致使治疗变得更加困难，有时疗效并不显著。

They are scrambling to tighten up on the use of antibiotics in an effort to slow the development of resistant strains.

他们正忙于收紧抗生素的使用，以减缓耐药菌株的发展。

If the strain travels to united states as resistant strains have in the past, doct ors will have very few options.

如果这种毒株像过去的抗药性菌株一样传播到美国，医生将没有什么选择余地。

Doctors are also trying to make the best use of antibiotics we have now by slowing the development of new resistant strains.

医生们还试图通过减缓新的耐药菌株的发展来最大限度地利用我们现有的抗生素。

Unfortunately, such promiscuous use of drugs is the best way to put selection pressure on the worms and encourage the evolution of resistant strains.

不幸的是，这样的预防性用药是在寄生虫身上施加选择压力的最佳方法，能够促进抗药品种的进化。

If this new super resistant strain spreads in 2019, it will lead to fertility complications...babies born from infected mothers are often born blind.

如果这种新的超级耐药菌株在 2019 年传播， 将导致生育并发症… … 受感染的母亲所生的婴儿往往先天失明。