Introduction: Public health surveillance together with good sanitary decisions is essential for the proper management of the SARS-CoV-2 pandemic .
Objective: To compare the performance of Colombian departments based on the quality of the data and to build the national ranking . Materials and methods: We analyzed the accumulated cases published between March 6 and September 1, 2020, by the Instituto Nacional de Salud . To achieve comparability, the analyses considered the day the first case was diagnosed as the first analysis date for each department . The fulfillment of Benford's law was assessed with p-values in the log-likelihood ratio or chi-square tests . The analysis was completed with the lethality observed in each department and then the performance ranking was established .
Results: Bogotá and Valle del Cauca had optimal public health surveillance performance all along . The data suggest that Antioquia, Nariño, and Tolima had good containment and adequate public health surveillance after the economic opening beginning on June 1 , 2020 . Conclusion: We obtained the ranking of the departments regarding the quality of public health surveillance data . The best five departments can be case studies to identify the elements associated with good performance.