Introduction: The COVID-19 pandemic revealed infodemics as an aggravating factor in health emergencies, a situation that enhanced the role of data verification journalism in crisis situations. This article aims to know the dynamics of publication and interaction on Facebook of the international fact-checking group LatamChequea Coronavirus during the first two months after the declaration of the COVID-19 pandemic by the WHO (March 11, 2020 - May 11, 2020). Methodology: The contents, metadata and reactions generated in a total of 5736 posts published by 31 different fact-checkers were collected with Crowdtangle and analyzed. Results: Among the most shared publications, those related to the COVID-19 generated more reactions and comments than those referring to other topics; the volume of shares is high in relation to other generally more frequent interactions and publications that include links achieved more interactions of all kinds than those based on videos or images. There are positive correlations between the number of likes and the number of shares, and between the angry reaction and the number of comments. Discussion and conclusions: The relevance of sharing in the set of interactions would indicate a high interest of the users to share the denials about fake news, something that distances from previous referenced investigations. The results also point to the influence of the emotional reaction expressed in the interaction with the content in the form of sharing or commenting.