Table 1. The distribution of affected students within the five government primary schools in Gaibandha District, Bangladesh.

School designation, sub-district	Proportion of students reported suffering from the outbreak among students eating the biscuits, (%)	Number of affected students meeting case definition N=44, (%)	Proportion of case-patients among students eating the biscuits, (%)
School A, Gobindaganj	39/256 (15)	19 (43)	19/256 (7)
School B, Gobindaganj	33/253 (13)	0 (0)	0/253 (0)
School C, Shahghata	19/161 (12)	7 (16)	7/161 (4)
School D, Shahghata	30/252 (12)	15 (34)	15/252 (6)
School E, Shahghata	21/251 (8)	3 (7)	3/ 251 (1)
Total	142/1173 (12)	44 (100)	44/1173 (4)

The affected students had visited primary care hospitals with reported acute physical symptoms apparently after consumption of high-energy biscuits provided by the school feeding program during 27−30 October 2010