The scale of disinformation surrounding the COVID-19 pandemic has been called infodemic. It involved disseminating various messages and theories that had a significant negative impact on limiting the spread of the disease but also exacerbated existing social antagonisms and emboldened and radicalised fringe groups. Infodemic, to a large extent manifested in social media, also fostered the formalisation of denialist circles, who transferred their sometimes very aggressive sentiments from the web to the real world. Negation and contestation of the pandemic were partly born spontaneously but were also created as part of postmodern hybrid activities. Consequently, narratives of infodemic led to difficulties in functioning health services, but above all, to an increase in morbidity and mortality related to COVID-19. The consequences of the infodemic would also include various economic effects, such as increased medical expenses for unvaccinated people or turbulence in the labour market.