Compared to paper-based records, EHR-based tracking reduced time and manpower requirements by the automation of data acquisition from each practice and improved capabilities for determining ILI incidence by reporting a patient denominator along with the number of ILI cases. Proper training and selecting the right practice played a large role in that success. Some initial challenges included providers overlooking the symptomology associated with ILI in the CDC guidelines, which led to failing to identify ILI cases and unfamiliarity with the electronic template. This was especially an issue in a larger practice that had a large number of rotating staff.