SUPPLEMENT The Clinical Burden of Rotavirus Disease Retrospective Analysis of Infant and Childhood Gastroenteritis in Seven Countries in Central and Eastern Europe Zso´fia Me´szner, MD, PhD,* A ´ gnes Balogh, MSc,* Krisztia´n Ba´nyai, PhD,† Jo´zsef Kova´cs, MD, PhD,‡ Petr Pazdiora, MD, PhD,§ Jacek Mrukowicz, MD, PhD,Ge´za Molna´r, MD, PhD,¶ Vladimir Tatochenko, MD,# Maria Avdicova, MD, PhD,** and Alenka Kraigher, MD, PhD† Background: Rotavirus (RV) is the leading cause of acute gastro- enteritis (GE) among infants and young children worldwide. How- ever, little is currently known concerning the specific burden of RVGE in Central and Eastern Europe (CEE). This study was undertaken to asses the burden of RVGE among children aged 5 years in 7 CEE countries (Czech Republic, Hungary, Poland, Ro- mania, Russia, Slovakia, and Slovenia). Methods: Data relating to the incidence of total GE and RVGE (including associated hospitalizations and mortality) were retrospec- tively collected between 1998 and 2003 and analyzed individually for each country and collectively using the ‘pyramid’ model of disease burden established by Parashar. Results: Although limited by differences in methods of reporting and data collection between countries, available data clearly dem- onstrate the clinical significance of RVGE in CEE. RV accounts for up to 55.3% of all GE hospitalizations in children aged 5 years in this region. G1 seems to be the most common circulating RV type, followed by G3 and G9. Death caused by RV is rare in CEE, reflecting appropriate disease management. Although specific health economic data are lacking, the high rate of hospitalization caused by RVGE in CEE countries is likely to be associated with significant direct and indirect public health costs. Conclusion: Prevention of RV disease through routine childhood vaccination would be expected to reduce the substantial burden of acute GE disease among infants and young children in CEE, pri- marily through a reduction in the number of RV-related hospital- izations, with associated reductions in both medical and social costs. Key Words: rotavirus, gastroenteritis, diarrhea, disease burden, Central and Eastern Europe (Pediatr Infect Dis J 2008;27: S33–S41) A cute diarrhea in infancy and early childhood is one of the most important public health challenges worldwide. 1 Although mortality has substantially decreased in developed countries since the early 1980s, diarrhea remains a leading cause of death in young children in the developing world. 2 Rotavirus (RV) is the most common cause of gastroenteritis (GE) among infants and young children, 3–5 with recent esti- mates suggesting that RV infections lead to as many as 39% of all childhood diarrhea-related hospitalizations and 611,000 childhood diarrhea-related deaths globally each year. 4 Vac- cination is considered the most effective public health strat- egy to prevent RV infection and reduce disease burden, and development of safe and effective vaccines to reduce the morbidity and mortality caused by RVGE in children has been given a high priority by the World Health Organisation. 5 Two new RV vaccines have now been licensed or are nearing licensure in many parts of the world—a live attenuated G1P8human RV vaccine (Rotarix; GlaxoSmithKline Bio- logicals, Rixensart, Belgium), licensed in Europe and more than 60 other countries around the world, 6 and a pentavalent live human-bovine reassortant vaccine (Rotateq; Merck & Co., Whitehouse Station, NJ) licensed in the United States, Europe, and Australia. 7 It is important to determine the burden of RVGE in specific countries and regions to guide future recommenda- tions for RV vaccine use. Studies have been undertaken to analyze the clinical and economical burden of RVGE in both developed and developing countries, 3–5 with recent data high- lighting the significant public health burden associated with RVGE within the European Union (EU). 8 –11 Little is cur- rently known concerning the specific burden of RVGE in Central and Eastern Europe (CEE). Although public health systems in CEE are traditionally well organized, data collect- ing and reporting methods are often biased by insufficient or outdated infrastructure and logistics. Furthermore, although financial resources (eg, gross domestic product per capita) vary considerably between countries in this region, these are generally an order of magnitude lower than in North America From the *National Institute of Child Health (OGYEI), Szent La´szlo´ Hos- pital for Infectious Diseases, Budapest, Hungary; †Institute of State Public Health Service, Baranya County, Hungary; ‡GlaxoSmithKline Biologicals, Hungary; §Institute of Epidemiology, Medical Faculty of Charles University, Plzenˇ , Czech Republic; Polish Institute for Evidence Based Medicine, Krakow, Poland; ¶Institute of Public Health, Cluj, Romania; #Central Institute of Epidemiology, Moscow, Russia; **De- partment of Epidemiology, Regional Office of Public Health, Banska Bystrica, Slovakia; and ††Institute of Public Health, Ljubljana, Slovenia. Support was provided by GlaxoSmithKline Biologicals for data analysis and manuscript preparation. Address for correspondence: Zso´ fia Me´szner, MD, PhD, National Institute of Child Health, 64 Dioszegi ut Budapest, Hungary H-1113. E-mail: zsmeszner@ogyei.hu. Copyright © 2007 by Lippincott Williams & Wilkins ISSN: 0891-3668/08/2701-0033 DOI: 10.1097/INF.0b013e31815eee3b The Pediatric Infectious Disease Journal • Volume 27, Number 1, January 2008 S33