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Table 3 Varicella cases in children <17 years of age in Munich paediatric practices during five consecutive varicella seasons; absolute numbers and mean number per 1000 patient contacts (with 95% confidence interval)

From: Varicella routine vaccination and the effects on varicella epidemiology – results from the Bavarian Varicella Surveillance Project (BaVariPro), 2006-2011

Season 1 2 3 4 5 1-5
Surveillance period Oct 06-Sep 07 Oct 07-Sep 08 Oct 08-Sep 09 Oct 09-Sep 10 Oct 10-Sep 11 Oct 06-Sep 11
(N all monthly reports) (N = 1015) (N = 965) (N = 1013) (N = 974) (N = 947) (N = 4914)
Varicella cases - all       
- n 6079 3518 3215 1778 1464 16054
- mean per 1000 patient contacts (95%CI) 6.58 (6.14-7.03) 4.20 (3.85-4.55) 3.95 (3.59-4.30) 2.26 (2.02-2.51) 2.16 (1.86-2.47) 3.86 (3.70-4.02)
Varicella cases - vaccinated       
- n 218 231 314 179 134 1076
- mean per 1000 patient contacts (95%CI) 0.27 (0.22-0.32) 0.32 (0.24-0.40) 0.40 (0.34-0.47) 0.26 (0.21-0.32) 0.24 (0.17-0.32) 0.30 (0.27-0.33)
- % of all varicella cases 3.6 6.6 9.8 10.1 9.2 6.7
Varicella cases - with complications       
- n 31 20 38 28 17 134
- mean per 1000 patient contacts (95%CI) 0.04 (0.02-0.06) 0.03 (0.01-0.05) 0.07 (0.03-0.11) 0.07 (0.02-0.11) 0.05 (0.01-0.08) 0.05 (0.04-0.07)
- % of all varicella cases 0.5 0.6 1.2 1.6 1.2 0.8
  1. Data from BaVariPro Practice Surveillance; Oct 2006-Sep 2011.
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BMC Infectious Diseases

ISSN: 1471-2334

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