Ensuring Community Engagement in Disease Surveillance: The Municipal Case Investigation and Contact Tracing System for COVID-19 in Puerto Rico.

To describe the implementation of a novel disease surveillance model in Puerto Rico, the Municipal Case Investigation and Contact Tracing System for COVID-19, established during the pandemic as the primary response. We analyzed data from July 2020 to June 2021, including all COVID-19 cases reported by public and private laboratories in Puerto Rico to describe the accomplishments and limitations of the surveillance. During the first year, the system was successfully implemented in all Puerto Rican municipalities, collecting data on more than 132 000 confirmed COVID-19 cases.