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Table 4 Description of measles clusters in schools and kindergartens.

From: Measles transmission from an anthroposophic community to the general population, Germany 2008

Type of Institution Anthro-posophic Week of disease onset of 1st case Number of cases per cluster (N) N, after start of respective intervention Duration of cluster in days (D) D, after start of respective intervention Total number of children in institution (I) Attack rates* in %
Intervention A        
School yes 11 2 1 4 0 25 8.0
School yes 15 6 5 21 20 600 1.0
Kindergarten no 17 2 1 10 0 99 2.0
Kindergarten no 17 8 7 12 5 50 16.0
School no 23 8 7 37 36 530 1.5
School no 24 2 1 8 0 170 1.2
    Total = 28 Median = 3   Median = 3 Total = 1474 Mean = 1.9
Intervention B        
Kindergarten no 17 15 13 24 23 72 20.8
School no 18 4 2 10 3 364 1.1
School no 18 15 13 31 28 507 3.0
School no 19 23 21 67 66 787 2.9
    Total = 57 Median = 13   Median = 26 Total = 1730 Mean = 3.3
  1. * The attack rates should be interpreted with caution since the population at risk (number of susceptible contacts per school or kindergarten) was not available.