Polish cyberspace in the face of the coronavirus. Which news sites have published the most articles on vaccines and COVID-19 immunization?

Since May this year, the Center for Propaganda and Disinformation Analysis has been carrying out a detailed monitoring of the most opinion-forming information portals in Poland:,,, and Data collected between 10.05 and 04.07.2021 has allowed to conduct a thorough analysis of articles published on the Internet in terms of information on the recently invented COVID-19 vaccine. The published texts published on the Internet have been analyzed quantitatively and qualitatively.