Introducción. In: Public Health Policies and Emerging Actions in the Context of COVID-19: The Case of Mexico. A Mass Media Analysis [Internet]. Colombia,CO: Sello Editorial UNAD; 2021 [cited 2026 Nov. 2]. pp. 9-12. (Institutional). Available from: https://libros.unad.edu.co/index.php/selloeditorial/catalog/book/121/chapter/958