Pertussis vaccination: problems, possible solutions

Relevance. The growth of pertussis is observed in all countries of the world. The main reasons for this are: decreased level of vaccination, loss of antibodies after vaccination, new methods of examination, changes in the antigenic structure of the pathogen. Solution: vaccination of pregnant women, increasing the level of vaccination, age-related revaccinations. The prospect is to create new vaccines.Purpose. Determine the frequency of untimely vaccination against whooping cough in children of the first years of life, the duration of immunity preservation after the completed set of vaccinations, and the rationale for the catch-up immunization scheme.Results. The timeliness of vaccination was evaluated in 675 children according to vaccination certificates and form112/y. It turned out that 9,21% of children received the first vaccination after a first year old, the second – already 24,10%, the third more than 34%. 49,75% of children included in the analysis had revaccination by the 2 year old. Antibody titers were evaluated after vaccination and 1 revaccination in 114 children with informed parental consent. Through the year after whole cell vaccine did not have protective titers of 17 of the 58 children (29,3%), the grafted acellular – 15of 56 (26.8 percent). After 3 years was examined 39 children (25 – grafted acellular vaccine and the whole-cell 14). 44,0% (11 children) and 50,0% (7 children) did not have protective titers, respectively. The data coincided with the results of serological monitoring of Rospotrebnadzor in St. Petersburg. The need for catch-up immunization and the introduction of age-related revaccinations against pertussis was confirmed. Catch-up immunization schemes have been developed. Conclusions. Almost half of children are vaccinated with a violation of the calendar, the primary complex of vaccinations, both whole-cell and acellular vaccines, does not provide long-term protection. It is necessary to introduce catchup immunization and age-related revaccinations