The epidemic process of acute parvovirus infection in the Republic of Belarus


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Abstract

Objective. To establish the manifestations of the epidemic process of parvovirus infection in Belarus in the period 2005-2014 on the basis of the laboratory-verified cases of exanthematous form of the disease. Materials and methods. A total of 821 cases were analyzed. The long-term trend in the incidence of the disease was determined by the method of least squares using a first-order parabola. The annual dynamics was estimated from typical and group curves. The age structure of the cases was studied in the age groups: less than 3, 4-6, 7-10, 11-14, 15-19, 20-29, 30-39, 40-49 and 50-64 years. Results. One epidemic cycle lasting 9 years was revealed in the long-term dynamics. The annual seasonal dynamics was characterized by prevalence in winter, spring, and summer with 7- and 4-month seasonal peaks in ill-being and well-being years, respectively. The seasonal increment in morbidity rates in the ill-being and well-being years was 65.8 and 12.55%, respectively. The influence of seasonal factors in the ill-being years was 21.6 times higher than in the well-being years. Cases of the disease were confirmed in all age groups. The incidence rates in the children aged 4-6 and 7-10 years (6.76 and 5.34 per 100,000 children of this age, respectively) was 5 or more times higher than in the other age groups. Conclusion. The analysis of laboratory-verified parvovirus infection cases notified in the Republic of Belarus within a 10-year follow-up could establish long-term and annual morbidity trends, as well as the age structure of the cases.

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About the authors

M. A Yermolovich

Republican Research-and-Practical Center of Epidemiology and Microbiology

Email: yermalovich@mail.ru

A. M Dronina

Belorussian State Medical University

Email: alinadronina@mail.ru

E. O Samoilovich

Republican Research-and-Practical Center of Epidemiology and Microbiology

Email: esamoilovich@gmail.com

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