Antibiotic Resistance: Urgent Action Needed to Preserve Effectiveness | Chile & Global Threat
The increasing resistance of bacteria to antibiotics is a growing global health crisis, threatening to undermine decades of medical progress. While the introduction of antibiotics revolutionized the treatment of bacterial infections, their overuse and misuse have driven the evolution of resistant strains, rendering these life-saving drugs ineffective. This isn’t a distant threat; it’s a present reality impacting hospitals, communities, and even agricultural settings.
The Rise of Antimicrobial Resistance
Antimicrobial resistance (AMR) occurs when microorganisms – bacteria, viruses, fungi, and parasites – no longer respond to the medicines designed to kill them. This makes infections harder to treat and increases the risk of disease spread, severe illness, and death. According to recent data, approximately , world leaders committed to reducing the estimated annual deaths associated with bacterial AMR by 10% by .
Specific resistant strains are becoming increasingly prevalent. Researchers in Chile, for example, are observing a rise in methicillin-resistant Staphylococcus aureus (MRSA), as well as Enterobacteriaceae producing extended-spectrum beta-lactamases (ESBL) and carbapenemases, and multidrug-resistant Pseudomonas aeruginosa. These organisms pose a significant threat, capable of causing infections that are difficult, and sometimes impossible, to treat with currently available antibiotics.
The Role of Antibiotic Misuse
A key driver of AMR is the inappropriate use of antibiotics. As Esteban Durán Lara, a researcher at the Faculty of Health Sciences of the Talca University, explains, “Antibiotics are not an infinite resource. Their effectiveness depends on a delicate balance between science, responsibility and social behavior.” This imbalance is created through several practices, including unnecessary prescriptions, self-medication, prematurely stopping treatment courses, and using antibiotics without confirming the infection is bacterial through a laboratory test (an antibiogram).
When antibiotics are used unnecessarily, they kill susceptible bacteria, leaving behind those that are resistant. These resistant bacteria then multiply and can even transfer their resistance genes to other bacteria, further spreading the problem. This process compromises the effectiveness of therapies that have been foundational to modern medicine, impacting not only the treatment of common infections but also the safety of surgeries, cancer treatments, organ transplants, and other critical medical procedures.
A One Health Approach is Crucial
Addressing AMR requires a multifaceted approach, recognizing the interconnectedness of human, animal, and environmental health – often referred to as a “One Health” approach. The Quadripartite – the Food and Agriculture Organization of the United Nations (FAO), the United Nations Environment Programme (UNEP), the World Health Organization (WHO), and the World Organisation for Animal Health (WOAH) – welcomes the recent political declaration recognizing the need for global, regional, and national efforts to tackle AMR through this integrated lens.
The declaration calls for sustainable national financing and US$100 million in catalytic funding to help achieve a target of at least 60% of countries having funded national action plans on AMR by . This funding will support initiatives to diversify funding sources and increase contributions to the Antimicrobial Resistance Multi-Partner Trust Fund.
Strengthening Surveillance and Promoting Rational Use
On a systemic level, strengthening microbiological surveillance is essential to track the emergence and spread of resistant strains. Standardizing antibiotic prescription practices and promoting the use of rapid diagnostic tests to guide more precise therapies are also critical steps. Rapid diagnostics can help clinicians quickly identify the specific bacteria causing an infection and determine which antibiotics are most likely to be effective, reducing the need for broad-spectrum antibiotics and minimizing the selective pressure for resistance.
However, systemic changes alone are not enough. The informed participation of citizens is equally important. Durán Lara emphasizes that “no effort will be sufficient if the belief persists that ‘an antibiotic works for any illness.’” Public education campaigns are needed to raise awareness about the appropriate use of antibiotics and the dangers of self-medication.
Innovative Research Offers Hope
Researchers are actively working to develop new therapeutic strategies to combat AMR. These include intelligent biomaterials capable of releasing antimicrobials in a controlled and localized manner, combination therapies, and antibacterial peptides. These innovative approaches aim to reduce the selective pressure that drives resistance and offer alternatives for treating complex infections, such as those associated with chronic wounds or medical devices.
The development of new antibiotics is also crucial, but We see a challenging and expensive process. In the meantime, optimizing the use of existing antibiotics and preventing the spread of resistant strains remain the most effective strategies.
A Shared Responsibility
The fight against antimicrobial resistance is a shared responsibility. Governments, healthcare institutions, professionals, and individuals all have a role to play in preserving the effectiveness of these critical drugs. Using antibiotics only when appropriate, completing prescribed treatment courses, and understanding that antibiotics are ineffective against viral infections are simple, yet decisive, actions that can help slow the spread of resistance. As Durán Lara stresses, “Resistance is not a problem of the future, it is a present threat that requires commitment.”