Surveillance report Surgical site infections - Annual Epidemiological Report 2016 [2014 data] 24 Oct 2016 Surgical site infections (SSIs) are among the most common healthcare-associated infections (HAI). They are associated with longer post-operative hospital stays, additional surgical procedures, treatment in intensive care units and higher mortality. Surgical site infections - Annual Epidemiological Report 2016 [2014 data] - EN - [PDF-234.86 KB]