Rotavirus is the most common cause of diarrhoeal disease among infants and young children. The incidence and severity of rotavirus infections has declined significantly in developed countries, but was still able to cause more than 215,000 deaths worldwide in 2013, with the majority of mortality being observed in the developing world. Although treatment is nonspecific and generally involves management of symptoms, diagnosis is still important in eliminating antibiotics as a therapy of choice and in making a decision on hospitalisation for gastroenteritis.