Drug resistance refers to the decline or even disappearance of the sensitivity of pathogens to drugs after repeated contact with drugs, resulting in the reduction or ineffectiveness of drug efficacy. It is often used to refer to people. The big body of society, like people, will also produce large and small diseases. If drugs cannot be applied to the case in time and completely cured at the time of first offense, drug resistance will also occur, resulting in some diseases becoming persistent diseases.
Which of the following best fits the definition of drug resistance?
Laws and regulations on illegal sewage discharge are formulated and issued almost every year, but the illegal sewage discharge and excessive sewage discharge of some enterprises are still common, repeated prohibitions, and have a tendency to expand.