Review of the round table "Linguistic security. Anti-vaccination as a communicative threat: linguistic mechanisms of consciousness manipulation", organized by the staff of the research laboratory "Linguistic security and psychology of information impact" of the Institute of Law and National Security of the Russian Academy of National Economy and Public Administration under the President of the Russian Federation. Non-institutional information flows of medical topics (news in the media, blogs, Internet forums, public in social networks), which have become a significant factor in the functioning of the public health system, are considered. Particular attention is paid to the discussion of the increasing potential for a destructive impact on the consciousness of patients through the presentation of unreliable (erroneous or deliberately false) information in the communicative space. The importance of a linguistically safe environment for national security is noted. Such concepts as “covid dissident” and “vaccine dissident” and their impact on society are considered, foreign experience in countering “anti-vaccination” is analyzed. Based on the results of the discussion, tactics were proposed for consolidating society in times of crisis, for the formation of a linguistically safe media environment in terms of the values of medicine and healthcare, and directions for further work to counter destructive information flows using the arsenal of linguistic expertise were outlined. A roadmap for a system for monitoring linguistic security and countering linguo-communicative threats is proposed.