Institute for Bioengineering of Catalonia (IBEC) May 8 2025 The incidence of infection by Mycobacterium abscessus , is increasing in patients with cystic fibrosis, chronic obstructive pulmonary disease (COPD), and other chronic pulmonary diseases, leading to an accelerated lung function decline. Remarkably, 58–78% of patients with M. abscessus infection are also infected with Pseudomonas aeruginosa , the most common pathogen in these conditions. However, how these two bacterial species interact