Background:A surgical site infection is an infection that occurs after surgery in the part of the body where the surgery took place. SSIs previously called Post-operative wound infection result from bacterial contamination during or after a surgical procedure.Surgical Site Infection (SSI) by definition refers to an infection which occurs within 30 days after the surgery or within 1 year when an implant is left in place after the surgery and involving the incision or deep tissues at the operated site or infections involving organ or body space other than the incision, which was opened or manipulated during an operation. Surgical site infections (SSI) constitute a major public health problem worldwide and are the second most frequently reported nosocomial infections.