Background: Disease surveillance is a cornerstone of outbreak detection and control. The evaluation of a disease surveillance system is important to ensure its performance over time. Objectives: The role of implementation; of IDSR strategy on indicators of the core and supportive surveillance functions at the head of localities. Materials and methods: An intervention approach (one group pre-test post-test design) was conducted and baseline data of communicable diseases surveillance was obtained from selected Kassala state, four localities, and 60 health facilities. After implementing an integrated disease surveillance and response (IDSR) strategy for six months to evaluate core and support functions. The same questionnaire (WHO- guided modified and tested questionnaire) that was used in the baseline was applied. Results: The study showed that indicators of the supportive at the head of locality was improved at the head of four localities in terms of standards and guidelines, training, supervision and resources which witnessed significant improvement during pre and post intervention more than 90%. Conclusion: Improvements in indicators of core and support functions at the locality and state levels are inextricably linked to the quality of activities carried out at health facility levels. This was noticed when the value of intervention-supported functions increased, which may also be justified by the technique of computation technique, which is based on the aggregate of indicators of health facilities.

Background: Disease surveillance is a cornerstone of outbreak detection and control. The evaluation of a disease surveillance system is important to ensure its performance over time. Objectives: The role of implementation; of IDSR strategy on indicators of the core and supportive surveillance functions at the head of localities. Materials and methods: An intervention approach (one group pre-test post-test design) was conducted and baseline data of communicable diseases surveillance was obtained from selected Kassala state, four localities, and 60 health facilities. After implementing an integrated disease surveillance and response (IDSR) strategy for six months to evaluate core and support functions. The same questionnaire (WHO- guided modified and tested questionnaire) that was used in the baseline was applied. Results: The study showed that indicators of the supportive at the head of locality was improved at the head of four localities in terms of standards and guidelines, training, supervision and resources which witnessed significant improvement during pre and post intervention more than 90%. Conclusion: Improvements in indicators of core and support functions at the locality and state levels are inextricably linked to the quality of activities carried out at health facility levels. This was noticed when the value of intervention-supported functions increased, which may also be justified by the technique of computation technique, which is based on the aggregate of indicators of health facilities.