Fig. 2.

Incidence of hospitalisation by rotavirus season for children aged below 5 years of age for all-cause gastroenteritis (GE) (primary diagnosis only, grey bars), rotavirus gastroenteritis (primary or secondary ICD code = 008.61, black bars), or with application of adjustment factor 2 derived from laboratory surveillance at one hospital (see text, white bars), Hong Kong (1 July 1997 to 31 March 2011). *Asian Rotavirus Surveillance Network study period. ^#Rotavirus vaccine licensed for private sector use in Hong Kong. ^{^}Population adjusted to account for shorter final study year 1 July 2010 to 31 March 2011 (9 months).