Acknowledgments
The authors would like to thank the Health Department and Department of
Education of the Government of the Catalonia (Spain), the former
Direcció General de Recerca i Innovació en Salut (DGRIS) andInstitut Català de la Salut (ICS) that made this project
possible, and all the health care professionals acting as a COVID-19
pandemic health taskforce in Catalonia. Also, we would like to specially
thank the effort and dedication all the sentinel schools’ staff,
students and families who participated in the project.