Rotavirus Infections: Pathophysiology, Symptoms, and Vaccination
Karolina Pawłuszkiewicz, Piotr Józef Ryglowski, Natalia Idzik, Katarzyna Błaszczyszyn, Emilia Kucharczyk, Dagmara Gaweł-Dąbrowska, Marta Siczek, Jarosław Widelski, Emil Paluch
Abstract
Rotavirus (RV) is the most common cause of severe acute gastroenteritis (AGE) in children under five years of age. This review summarizes current knowledge on RV infections, with a particular focus on viral structure, pathophysiological mechanisms, and age-dependent clinical presentation. Special attention is given to systemic manifestations, including central nervous system involvement, autoimmune responses such as type 1 diabetes and celiac disease, and rare associations with biliary atresia. The mechanisms of RV-induced diarrhea and vomiting are discussed in detail. Clinical severity scoring systems-such as the Vesikari and Clark scales-and dehydration assessment tools-the Clinical Dehydration Scale (CDS) and the Dehydration: Assessing Kids Accurately (DHAKA) score-are compared. The review highlights differences in disease course between children under and over five years, emphasizing that RV is not limited to early childhood. A major section addresses the global effectiveness of vaccination programs, their role in reducing disease burden, coverage challenges, and decreased efficacy in low-income countries. Particular focus is placed on high-risk groups, including preterm and immunocompromised infants.