Another last-resort antibiotic has fallen victim to the rapid evolution of drug-resistant superbugs. The powerful antibiotic combination ceftazidime-avibactam (CZA), widely used to treat severe hospital-acquired infections caused by Pseudomonas aeruginosa—particularly in critically ill and immun...

Source: [Phys.org](https://phys.org/news/2026-07-rare-mutations-dangerous-hospital-bacteria.html)

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