AMR Persists Despite New Drugs

Context

Antimicrobial resistance (AMR) remains a critical global health challenge despite the development of new drugs. The persistent rise of resistant pathogens threatens to undermine the efficacy of modern medicine, calling for urgent, coordinated action.

Understanding Antimicrobial Resistance

• AMR: AMR occurs when microorganisms such as bacteria, viruses, fungi, and parasites evolve to resist the effects of antimicrobial drugs, including antibiotics. This resistance makes infections harder to treat, increases mortality, and raises healthcare costs globally.
• Global Impact: AMR was directly responsible for an estimated 1.27 million deaths worldwide in 2019 and contributed to nearly 5 million deaths overall. It affects all countries, regardless of income level, with low- and middle-income countries bearing the brunt due to poverty and healthcare inequities.

The Challenge Despite New Drugs

• New Drugs and Their Limitations: While new antimicrobial drugs have been developed, the pipeline for novel antibiotics remains inadequate compared to the rapid emergence of resistance. The effectiveness of last-resort antibiotics, such as carbapenems, is declining due to increasing resistance, especially in bacteria like Klebsiella pneumoniae and methicillin-resistant Staphylococcus aureus (MRSA).
• Rising Resistance Rates: Resistance rates are alarmingly high: for example, 42% of E. coli strains are resistant to third-generation cephalosporins, and 35% of S. aureus strains are methicillin-resistant globally. This trend is making common infections increasingly difficult to treat.

Drivers of Antimicrobial Resistance

• Misuse and Overuse: The primary drivers of AMR are the misuse and overuse of antimicrobials in humans, animals, and agriculture. Inappropriate prescribing, self-medication, and use of antibiotics as growth promoters in livestock accelerate resistance development.
• Healthcare and Agricultural Practices: In healthcare, excessive antibiotic prescriptions, including in dental and primary care settings, contribute significantly to resistance. In agriculture, continued use of antibiotics for livestock growth promotion persists in about one-third of countries, further exacerbating the problem.

Consequences of AMR

• Health Impact: AMR leads to longer illnesses, higher mortality rates, and increased complications requiring hospitalization. It also jeopardizes medical procedures like surgeries, chemotherapy, and childbirth, which rely on effective antibiotics to prevent infections.
• Economic Burden: The World Bank estimates that AMR could add up to US$1 trillion in healthcare costs by 2050 and result in GDP losses between US$1 trillion and US$3.4 trillion annually by 2030, threatening global economic stability.

Strategies to Combat AMR

• Prevention and Stewardship: Infection prevention through good hygiene, vaccination, and control will diminish the requirement for antibiotics. It is antibiotic stewardship that promotes the correct use of antibiotics, thus slowing the development of resistance.
• Surveillance and Research: Resistance patterns and antimicrobial use are tracked through enhanced systems for surveillance toward injecting a targeted approach. R&D holds the key to developing new vaccines, diagnostics, and drugs to out-compete resistant pathogens.
• One Health Approach: Addressing AMR requires a One Health approach to reduce misuse of antibiotics in all domains by synergy of human health, animal health, and environment sectors. 

Global and National Efforts

• Global Action Plan: The Global Action Plan on AMR by the WHO is geared towards guiding countries in the development of National Action Plans (NAPs) since 2015. Up to 69% of countries have adopted these NAPs as of 2023, but there is a wide disparity in implementation.
• Challenges in Implementation: Differences in governance, funding, and technical capacity stand against the control of AMR, with antibiotic use in animals still ongoing and stewardship practices inconsistently applied being some important hurdles. 
• Case Study: China’s National Action Plan: China has adopted a rather comprehensive strategy for AMR containment and has registered some successes, but the country continues to struggle with regional disparities and growing resistance in some pathogens. The plan emphasizes prevention, good 

Conclusion

Despite the arrival of new antimicrobial drugs, the threat of AMR continues to escalate due to widespread misuse and insufficient stewardship. Combating AMR requires global cooperation, robust surveillance, innovation in drug development, and integrated policies addressing human, animal, and environmental health. Without urgent action, AMR could reverse decades of medical progress and impose severe health and economic consequences worldwide.

Source: Press Reader

UPSC Prelims Practice Question

Q. Which of the following statements regarding Antimicrobial Resistance (AMR) is/are correct?

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