A minimalist opportunist: the emergence of Acinetobacter baumannii.

Acinetobacter baumannii's success as a pathogen relies on adaptability and resilience rather than extensive virulence factors, making it a key model for studying minimal pathogenic strategies.

• Why it matters: Understanding how a pathogen with limited virulence determinants causes widespread infections is crucial for developing new intervention strategies beyond antibiotic resistance.
• What they did: The study reviews key biological features of A. baumannii, emphasizing its intrinsic tolerance, genomic plasticity, metabolic adaptability, and regulatory networks, based on current scientific discoveries.
• The result: This insight positions A. baumannii as a valuable system for exploring how minimal pathogens achieve high adaptability and clinical success, highlighting open questions like intracellular reservoirs' roles in chronic infection.