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Table 1 Childcare facility-related EHEC outbreaks, 2010–2013, Japan. All outbreaks listed below in the table refer to childcare facility-related outbreaks

From: Enterohemorrhagic Escherichia coli outbreaks related to childcare facilities in Japan, 2010–2013

  Total 2010 2011 2012 2013
Total no. reported cases 15,887 4134 3940 3768 4045
No outbreaks 68 9 12 15 32
No. outbreak-related cases 1035 77 141 304 513
No. cases per outbreak 15.2 8.6 11.8 20.3 16.0
No. asymptomatic cases per outbreak 9.4 3.7 6.8 14.8 9.6
No. Hemolytic Uremic Syndrome cases in outbreaks 4 0 1 2 1