Evaluation of the Incidence of Rotavirus Infection and the Effectiveness of Vaccination in the Khanty-Mansi Autonomous Ugra District in 2014–2018

Relevance . Rotavirus infection (RVI) is recognized as the main cause of severe gastroenteritis in children worldwide and leads to 527 000 deaths annually. Aim . Present study was intended to evaluate the effectiveness of anti-epidemic measures and vaccination against RVI in children in Pyt-Yakh, Khanty-Mansiysk Autonomous Okrug-Ugra in 2016–2017. Materials and methods . An analysis of the incidence of intestinal infection and RVI was carried out within 2 years prior (2014–2015) to and 2 years after (2016–2017) the implementation of anti-epidemic measures.A separate study was conducted to evaluate the safety and efficacy of a live oral pentavalent vaccine in 593 children including 433 who received three doses of the vaccine in 2016–2017. Results . It was shown that anti-epidemic measures including vaccination decreased the chances of RVI in children aged 0–17 years 1.68 fold in 2017–2018 compared to 2015–2016 (odds ratio (OR) 0.59, 95% confidence interval (CI) 0.49–0.71, p < 0.001). The same data were obtained for children 12 months and younger (OR 0.57, 95% CI 0.35–0.95, р = 0.037) and children aged 1–2 years old (OR 0.62, 95% CI 0.45–0.84, р = 0.002). There were no cases of moderate or severe intestinal infections or hospitalizations in vaccinated population as well as postvaccinal complications. Conclusion . The incidence of intestinal and rotavirus infections in all population in 2018 compared to 2016decreased by 53% and 72% respectively.