Comparative analysis between the early months of 2020 and 2021 in the process of monothematization of the news coverage during the COVID-19 pandemic in Jornal Nacional. Intercom [Internet]. 2022 May 25 [cited 2025 Dec. 5];45:e2022105. Available from: https://www.revistas.intercom.org.br/index.php/revistaintercom/article/view/3861