4 strains of virus infect humans. Telephones and water play tables were commonly contaminated in DCC infections. A quadrivalent, live attenuated rotavirus vaccine is in development and may be licensed in the next 2 years. The vaccine will not prevent infection or mild disease but does prevent severe disease requiring hospitalization. Most children are infected by 3 years of age.
Neonatal infections are also often asymptomatic.
Breastfeeding results in milder disease in neonates.