As of December 10, 2020, the Springfield Greene County Health Department provided an extensive dashboard with COVID surveillance information. The charts gave a quick overview of various measures and could be adjusted to show specific data better. That data was not downloadable through their website but was through the state and national figures. The dashboard was removed after the federal emergency ended in 2023. Unfortunately, the Internet Archive saved pages do not reflect the underlying data or display the dashboards.
Local testing labs and care institutions are required to report surveillance data to either the Missouri DHSS and/or the Greene County Health Department. The DHSS and county health then transfer anonymized information to the CDC and reconcile data as needed.
The Springfield Greene County Health Department had an extensive number of web pages explaining the cities response to the COVID pandemic. Springfield city code for COVID-19 was in article 8 via the Municode searchable and browsable interface. Those codes no longer apply. In addition, you can also find the signed and scanned bills and ordinances by searching for "COVID".
Note that Greene County does not have any surveillance specific laws. Rather, that is covered at the state level. See links on that page for specific laws.