COVID-19 data is collected through different methods. The majority of the data on positive cases come through the statewide disease reporting system, CalREDIE. This system receives data on cases from both laboratories and health-care providers who conduct COVID-19 testing. The positive cases are then imported into our Public Health Dynamics data system where EPI personnel review data, add additional information as necessary and filter out any cases that are not Imperial County residents. As for the negative cases, the EPI staff extract this information from CalREDIE and compile it along with any reports received via fax from providers to generate a total count of negative tests.