Rapid Communication
Copyright ©2008 The WJG Press and Baishideng.
World J Gastroenterol. May 7, 2008; 14(17): 2771-2775
Published online May 7, 2008. doi: 10.3748/wjg.14.2771
Table 1 Hepatitis A incidence in vaccination and control groups
GroupNo. of subjectsNo. of casesIncidence (1/100 000)
Vaccine336500
Control25724155.5