Postoperative infection with meticillin-resistant Staphylococcus aureus and socioeconomic background

Infectious disease can be linked to social deprivation. We investigated whether postoperative infection with meticillin-resistant Staphylococcus aureus (MRSA) is related to socioeconomic background. Patients were stratified by social deprivation according to postcode. In a consecutive series of 1739 UK residents undergoing isolated coronary artery bypass grafting, 23 (1•3%) were infected with MRSA. We noted a graded relation between incidence of infection and social deprivation. Patients from the most deprived areas had a seven-fold higher infection rate (13 of 579 [2•2%]) than those from the least deprived areas (two of 580 [0•3%]; P=0•0040). Patients with MRSA infection had a six-fold higher mortality rate and a longer hospital stay than patients with no such infection. Our findings suggest that patients from deprived areas might be especially susceptible to postoperative infection with MRSA.