Incidence of rotavirus diarrhea and intussusception in Hong Kong using standardized hospital discharge data.

Incidence for rotavirus and intussusception was estimated from standardized discharge data for all Hong Kong government hospitals (1997 to 1999). Intussusception incidence in infants (78 to 100 of 100,000) was relatively high. The distinct winter seasonality of rotavirus was not evident for intussusception. During the first 5 years of life an estimated 1 child of 28 is admitted with rotavirus infection (4% of all medical admissions).