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Table 2 Estimated under-reporting factors for norovirus illness by age-group and sex during a large outbreak of Shiga toxin-producing E. coli O104, Germany, 2011

From: Estimating the under-reporting of norovirus illness in Germany utilizing enhanced awareness of diarrhoea during a large outbreak of Shiga toxin-producing E. coli O104:H4 in 2011 – a time series analysis

  W21-W30 W21-W23 W24-W30
  Males Females Males Females Males Females
Age [years] Factor 95% CI Factor 95% CI Factor 95% CI Factor 95% CI Factor 95% CI Factor 95% CI
0-9 1.16 0.94 1.43 1.18 0.95 1.45 1.22 0.86 1.72 1.34 0.94 1.89 1.10 0.86 1.40 1.07 0.83 1.37
10-19 2.08 1.66 2.62 1.96 1.56 2.46 2.49 1.73 3.58 2.18 1.51 3.13 1.83 1.39 2.40 1.80 1.37 2.35
20-29 2.63 2.11 3.27 2.28 1.83 2.82 2.88 2.01 4.11 2.67 1.87 3.79 2.43 1.87 3.15 2.03 1.57 2.62
30-39 2.25 1.80 2.81 2.09 1.68 2.61 2.52 1.75 3.61 2.55 1.78 3.64 2.05 1.57 2.68 1.82 1.40 2.37
40-49 1.88 1.50 2.34 1.79 1.44 2.23 2.42 1.69 3.46 2.02 1.41 2.88 1.57 1.20 2.05 1.63 1.26 2.11
50-59 1.74 1.40 2.17 1.75 1.41 2.18 2.00 1.40 2.86 2.03 1.43 2.90 1.57 1.20 2.04 1.57 1.21 2.04
60-69 1.30 1.04 1.63 1.47 1.18 1.84 1.61 1.12 2.30 1.72 1.20 2.46 1.12 0.85 1.46 1.31 1.00 1.70
70+ 1.12 0.91 1.39 0.96 0.78 1.18 1.44 1.02 2.03 1.19 0.84 1.67 0.95 0.74 1.22 0.83 0.65 1.06
  1. Note. W calendar week; CI confidence interval.