Both NHSNLink and Electronic Case Reporting (eCR) support CDC’s Data Modernization Initiative by improving data sharing between CDC and its partners, but NHSNLink and eCR have different purposes and serve different public health surveillance needs. NHSNLink support NHSN’s model of national-level surveillance of healthcare events to support quality improvement and benchmarking. eCR supports a model for automated case reporting of reportable public health conditions (e.g., state-reported COVID-19 cases).