Study to Assess the Impact of Vaccination on Hospitalizations and Outpatient Visits Due to Rotavirus Gastroenteritis

A Study to Assess the Impact of Rotavirus Vaccination on Hospitalizations and Outpatient Visits Due to Rotavirus Gastroenteritis (RV GE) in Japan

This study aims at assessing the impact of RV vaccination in hospitals in Nagoya City (administrative district), Japan, where RV vaccines have been introduced since November 2011 and financial support for vaccination costs by Nagoya city, Japan have been implemented from October 2012.

The electronic admission database or any other applicable database of the hospital will be reviewed to identify hospitalized children/children with outpatient visits/emergency room visits, less than five years of age who had been diagnosed with acute gastroenteritis (AGE) or RV GE either by the International Classification of Diseases and Related Health Problems 10th Revision (ICD 10) diagnostic code (AA00-AA09 for intestinal infectious diseases and A08.0 for RV specific GE) or by RV positive rapid diagnosis kit results.

Note: The outcomes for the outpatient and emergency room visits will be assessed only in case the data for outpatient and emergency room visits can be obtained from at least one of the study centers.

Inclusion Criteria:

- Children aged less than five years visiting hospitals for RV GE or AGE from 2007 to 2016, who live in the study area.

Exclusion Criteria:

- Not applicable.