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To develop a technology for producing coronavirus-neutralizing antibodies in duck eggs (Anas platyrhynchos) immunized with a recombinant fragment of the S-antigen of the SARS CoV-2 virus, and to analyze the possibility of their use as an active substance in the development of local inhalation drugs to prevent the aerosol spread of respiratory viral infections, including a new coronavirus. Methods. Recombinant antigen production in the yeast expression system, production of antibodies from duck eggs, affinity purification, ELISA. Results. We describe an efficient method for obtaining functional yolk antibodies (IgY) from the hyperimmune duck eggs. We have shown that the average yield of total yolk antibodies from duck eggs is 0.25±0.05 grams per yolk. The obtained antibodies showed the virus neutralization activity at 70.6 % inhibition (PI) in blocking ELISA, which was comparable to the human serum antibodies after vaccination with coronavirus vaccine PI at 87 % (p≤0.05). Conclusions. The results obtained indicate that S-specific yolk antibodies can be used as an active substance for the development of topical inhalation drugs that prevent coronavirus infection. [ABSTRACT FROM AUTHOR]