The NNIS method can be useful for SSI surveillance and monitoring in single surgical wards. Longer operations, diabetes mellitus, and obesity increase the risk of SSI, as does performance of surgery in an emergency situation.

We describe a very rare case of chronic peritonitis with secondary adhesive intestinal obstruction caused by Sphingomonas paucimobilis in a healthy 28-year-old Chinese man. This bacillus has not been described as a cause of spontaneous peritonitis in healthy people. It was an asymptomatic, generalized, and slow-growing peritonitis causing peritoneal adherens and at the end intestinal occlusion that needed surgical adhesiolysis.