“…The blinded clinical assessors evaluated all participants for infection based on the presence of the following clinical criteria, similar to previous studies 3, 26,32,34,38 : drainage or purulent exudates from the surgical site; elevated body temperature (>37.5 8C) for longer than 72 h or a sudden increase in body temperature after having a normal temperature postoperatively; increase in oedema, induration and erythema of wound edges and surrounding tissues; unusual pain associated with the surgical site; increased leucocyte count (>10.10 Â 10 9 /l) with an associated increase in immature forms of polymorphonuclear neutrophils; an elevated Creactive protein level (>0.76 mg/dl); and localized, red, tender, overheated swelling, either fluctuating or indurated.…”