<p>The structural scheme is developed and the description of the bioengineered quasimolecular algorithm of scenario analysis of dynamics of variation series is presented. On the basis of this algorithm a complex of pessimistic, inertial and optimistic scenarios of connection of search activity of Internet users and general morbidity coronavirus infection were developed and verified. Correlation relations between the intensity of search queries on the topic &laquo;distance learning&raquo; of relative frequencies of search queries on various communicative information technology platforms have been evaluated. It has been found that the distribution of Internet users' search queries on coronavirus theme has the character of a chain branching process, which testifies to the phenomenon of &laquo;infodemia COVID-19&raquo;.</p>