Antibiotic resistance is spreading fast across the globe among gram-negative bacteria. This problem comes from a mix of human actions, environmental factors, and healthcare practices. Mobile genetic elements help these bacteria share resistance genes quickly. The spread is accelerating everywhere. It threatens public health in many countries.
Bacteria have clever ways to survive medicine. They can block drug entry, push drugs out actively, change antibiotic targets, or break down drugs with enzymes. The most common defense is making β-lactamase, which destroys key antibiotics. These mechanisms make infections much harder to treat. They also make standard care difficult.
Some bacteria are especially scary. Extended-spectrum β-lactamase-producing Enterobacterales and carbapenem-resistant E