Antibiotic resistance

Welcome to this lecture on antibiotic resistance, providing an overview of antibiotic resistance, including what it is, how it develops in bacteria, and the key mechanisms that allow bacteria to evade antibiotics. We'll examine the drivers behind its rise, like misuse of antibiotics in healthcare and agriculture and discuss the profound impact on patient outcomes, healthcare systems, and society at large. Finally, we'll outline comprehensive strategies for tackling resistance from stewardship and infection control to diagnostics, surveillance and public education. We'll explore a critical topic in microbiology and public health, antibiotic resistance. This occurs when bacteria evolve mechanisms to survive exposure to antibiotics designed to kill them. Antibiotic resistance is a growing global threat, making treatments less effective and leading to hundreds of thousands of deaths annually, potentially reaching 10 million by 2050. Understanding why and how bacteria become resistant is essential for controlling their spread and preserving treatment effectiveness. Bacteria resist antibiotics through several mechanisms. One strategy is producing enzymes like beta actomases that inactivate drugs such as penicillins and cephalosporins. Efflux pumps expel antibiotics, reducing their concentration inside the cell. Some bacteria alter antibiotic targets through mutations or chemical modifications, while others bypass drug blocked pathways or reduce outer membrane permeability. These resistance traits arise from