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Table 4 Contact data

From: Reconstructing the 2003/2004 H3N2 influenza epidemic in Switzerland with a spatially explicit, individual-based model

Age group Empirical mean [44]1 Mean household contacts in CH2 Mean activities per person3 Mean contacts per activity [SD]4 Median contacts per activity [IQR]4
0-4 10.21 2.95 1.29 5.62 [4.0] 5 [3-8]
5-9 14.81 3.23 1.52 7.6 [5.2] 7 [4-10]
10-14 18.22 3.23 1.54 9.75 [6.4] 9 [5-13]
15-19 17.58 2.98 2.29 6.38 [4.5] 6 [3-9]
20-29 13.57 2.12 2.06 5.56 [4.0] 5 [3-8]
30-39 14.14 2.40 1.91 6.14 [4.3] 5 [3-8]
40-49 13.83 2.52 1.90 5.95 [4.2] 5 [3-8]
50-59 12.30 1.63 1.87 5.70 [4.1] 5 [3-8]
60-69 9.21 1.32 1.72 4.58 [3.4] 4 [2-6]
70+ 6.89 1.39 1.82 3.02 [2.5] 3 [1-4]
  1. 1Average number of contact partners per day as measured by Mossong et al.
  2. 2Average number of contact partners within the individuals' household. Calculations are based on the Swiss census (Volkszählung 2000) and we assume that all individuals living in one household interact in a potentially contagious manner on a daily base.
  3. 3Average number of distinct activities performed by one individual per day.
  4. 4We assume that the number of contacts per activity follows a negative binomial distribution. The two columns describe the distributions that were determined to achieve a plausible overall contact distribution (see the "Realizing contacts" section).