Antibiotic susceptibility patterns at the Médecins Sans Frontières (MSF) Acute Trauma Hospital in Aden, Yemen: a retrospective study from January 2018 to June 2021 

A retrospective cross-sectional study conducted by Médecins Sans Frontières (MSF) in Aden, Yemen, aimed to identify antibiotic susceptibility patterns in patients treated with antibiotics. The study found that 75% of patients were injured by violence-related trauma, with most being men aged 19-45. Out of 598 infections diagnosed and treated, 60.5% were MDR organisms. The most common pathogens were Escherichia coli, causing IAI and SSTI, and Staphylococcus aureus, mainly causing osteomyelitis. Most Gram-negatives were ESBL producers, with most S. aureus being methicillin resistant. The findings will help in a comprehensive review of empirical antibiotic treatment guidelines.