[Fiocruz in the context of the COVID-19 pandemic: experiences in confronting scientific denialism].

This article expresses an opinion on the behavior of the Oswaldo Cruz Foundation (Fiocruz), in the context of the COVID-19 pandemic, in confronting the denialist stance taken by the government of former President Jair Bolsonaro (2019-2022). To this end, it outlines elements of the institution's trajectory in relation to public management, demonstrating initiatives to structure public health in the face of COVID-19 and scientific denialism. In the technical sphere, see the in-depth research on COVID-19 and new institutional frameworks for combating pandemics using the Astrazeneca/Oxford/Fiocruz vaccine as a reference. And in the social sphere, see the participation in the public debate on vaccination and prevention mechanisms using public health integration projects in the favelas as a reference. Knowing that, in addition to these examples, there were other actions in a variety of ways involving different sectors. Thus, given Fiocruz's performance, it is possible to evaluate it as a decisive institutional and social component in confronting the COVID-19 pandemic and scientific denialism at that tragic moment in Brazil.