The interventions evaluated in this proposed research seeks to address these gaps. The main aim is to evaluate the impact of the SSI screening protocol, delivered by sCHWs equipped with mHealth support, on the rate of return to care for patients with SSI 10 days post-operation. Two CHW-mHealth interventions will be evaluated. In the first, a sCHW will visit post-operative study participants in their homes to administer the screening protocol prompted by the mobile phone. In the second, a sCHW will call the patient and administer the same screening protocol over the phone. In this phase of the research, 364 patients will be assigned to each of these delivery arms, and the rates of appropriate return to care will be compared to that of 364 patients in a control arm receiving the standard of care (i.e. no additional follow-up). Process indicators also will be reported to describe the feasibility of CHW-mHealth interventions.