Final answer:
Bacteria acquire antibiotic resistance through mutation and natural selection, and the overuse and misuse of antimicrobial drugs can accelerate this process. To deal with drug-resistant microbes, promoting responsible use of antimicrobials and developing new antibiotics are essential.
Step-by-step explanation:
Bacteria acquire antibiotic resistance through mutation and natural selection, and once such traits are acquired, they are shared with other bacteria by horizontal gene transfer. Overuse and misuse of antimicrobial drugs, inappropriate use of antimicrobials, subtherapeutic dosing, and patient noncompliance with the recommended course of treatment can accelerate the evolution of drug resistance. To deal with drug-resistant microbes, it is important to promote responsible use of antimicrobials, develop new and more diversified antibiotics, and implement infection control measures.