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Table 2 Mumps attack rate per school for all children and for unvaccinated children

From: The role of schools in the spread of mumps among unvaccinated children: a retrospective cohort study

  All children Unvaccinated children
School N Attack
rate (%)
95% CI N Attack
rate (%)
95% CI
A 504 66 62-70 443 75 71-79
B 344 63 58-68 295 72 67-77
C 272 5 3- 8 28 32 15-49
D 71 1 0- 4 3 0 -
Total 1191 47 45-50 769 72