Rotavirus.

Rotavirus is the leading cause of nonbacterial gastroenteritis in young children and may infect neonates, older children, and adults as well. A large number of serogroups and types complicates the study, epidemiology, diagnosis, and prevention of rotaviral illness. Currently, routine diagnostic methods are satisfactory only for group A rotaviruses, and most commercially available kits in widespread use detect only this serogroup. Rehydration therapy and electrolyte management remain the primary treatment modalities. Recent vaccine developments offer the promise of a reduced burden of the viral pathogen worldwide.