[Mucosal viral vaccines: progress and problems].

Data obtained in the recent years on developing the viral inactivated mucosal vaccines by applying the mucosal-adhesive adjuvants are presented in the survey. Progress achieved in designing the mucosal influenza vaccines and mucosal vaccines against a variety of other viral infections is pointed out. Cross-protection against variations of a virus within its subtype limits as well as overcoming of a negative influence of parent antibodies produced on the immunogenicity of live-vaccines', which were used at young age, were observed in the intranasal administration of viral mucosal vaccines. A number of shortcomings of bacterial toxins used as mucosal-adhesive adjuvants as well as problems, which may arise when the viral mucosal vaccines are used on a large-scale basis due to a need in their two- and-threefold intranasal administration, are in the focus of attention.