CLI Surveillance View Larger Is North Carolina seeing a continued downward trajectory or sustained leveling of COVID-Like Illnesses (CLI) in its surveillance systems? COVID-19 Surveillance Summary will be updated every Thursday by 4 p.m. The North Carolina Department of Health and Human Services (NCDHHS) is using all available tools to monitor the spread of COVID-19 across the state. In addition to tracking and reporting of laboratory-confirmed cases, NCDHHS is using many of the same systems that are used to track influenza and other respiratory illnesses each season. Mild COVID-19 illness presents with symptoms similar to influenza-like illness, so surveillance systems that have historically been used during influenza seasons are being used to track trends of mild COVID-19 illness and allow for comparison with prior influenza seasons. Limitation: These numbers represent only people seeking care in the Emergency Department (ED).