1·The "superbug" make an enzyme called NDM-1, whic can exist inside different bacteria, and it makes them resistant to even the most powerful antibiotics - carbapenems.
这种"超级病菌"能够产生名为NDM-1的酶,而NDM-1可存在于不同种类的细菌中,甚至对最强大的抗生素—碳青霉烯类抗生素也能产生抗药性。
2·Because carbapenems are difficult to synthesize antibiotics, complex, such drugs listed in the breed.
由于碳青霉烯类抗生素原料合成难度大、工艺复杂,该类药物在我国上市的品种不多。