Pseudomonas aeruginosa is an opportunistic bacterium widely distributed in both natural and urban environments, playing a crucial role in global microbial ecology. This article reviews the interactive dynamics of P. aeruginosa across different ecosystems, highlighting its capacity for adaptation and resistance in response to environmental and therapeutic pressures. We analyze the mechanisms of antibiotic resistance, including the presence of resistance genes and efflux systems, which contribute to its persistence in both clinical and nonclinical settings. The interconnection between human, animal, and environmental health, within the context of the One Health concept, is discussed, emphasizing the importance of monitoring and sustainable management practices to mitigate the spread of resistance. Through a holistic approach, this work offers insights into the influence of P. aeruginosa on public health and biodiversity.
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