38% is extremely high. Your hospital should set up an infection control board headed by the microbiologist and they should outline the various reasons for such a high infection rate.
number of surgeries performed daily is directly proportionate to the surgical site infection rate. An over busy OT is one of the cause for SSI. So the use of multiple operation theaters alternatively is one of the solutions.
In recent times we have worked hard locally to reduce this using a change of skin prep to chlorhexidine-based rather than iodine, disposible drapes and gown, wound glues rather than dressings, isolation of patients with known pathogens - MRSA etc and pre-operative screening as well as protocolising antibuiotic therapy etc.
38% is a really big problem. And it seems to be a problem at all levels of SSI control. You should urgently try to invent/change protocols at least for: preoperative preparation of the skin, antibiotic prophylaxis, wound dressing, hand hygiene on the ward. Also microbiologists and epidemiologists should analyze the spectrum and the possible sources of the problem. Strong policy for antibiotic usage is also mandatory. Could you share with us your current protocols and the profile of operations?
38% is almost the same that it used to be before the Listerian era, before the carbolic antiseptics he developed, before sterilization, before masks, and other necessitate aseptic procedures. Before surgeons got used to brush their teeth regularlily, at last (please, will you read the History of Surgery :))
Dr.Ramirez-Fugueredo, are you quite sure that there is not misundertanding in terms, or so on?