Denying information about covid-19: communication strategies against fake news from Fato ou Fake and Lupa agencies in 2020. RECIIS (Online) [Internet]. 2025 Aug. 29 [cited 2026 Oct. 1];19(3):1-18. Available from: https://homologacao-reciis.icict.fiocruz.br/index.php/reciis/article/view/4551