Table 5

Seasonal incidence estimates of varicella cases per 1000 children 0-16 years of age in the area of Munich, by age group; a) minimum incidence estimate based on observed cases in paediatric practices, b) incidence estimate taking into account estimates on varicella cases from non-participating paediatric practices, general practitioners, and cases without physician consultation
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
a) Incidence /1000; based on observed numbers of cases in the participating practices (minimum incidence)
<1 year of age
- n 372 182 168 96 81 899
- incidence 23.4 10.9 9.8 5.6 4.7 10.7
1-4 years of age
- n 3494 2004 1652 845 737 8732
- incidence 58.7 33.2 26.7 13.3 11.4 28.2
5-9 years of age
- n 2039 1226 1273 752 554 5844
- incidence 29.9 18.0 18.6 10.9 7.8 16.9
10-16 years of age
- n 174 106 122 85 92 579
- incidence 1.9 1.2 1.3 0.9 1.0 1.3
<17 years of age (all cases)
- n 6079 3518 3215 1778 1464 16054
- incidence 26.0 14.9 13.5 7.4 6.0 13.4
b) Incidence /1000; corrected for cases from non-participating practices in the respective season*, cases from general practitioner practices#, and untreated cases§ (estimates)
<17 years of age (all cases)
- n 18244 11106 9667 5561 4710 49288
- incidence 78.1 47.1 40.6 23.0 19.2 41.3

Data from BaVariPro Practice Surveillance, Oct 2006-Sep 2011.

*: assuming that, on average, a participating and a non-participating paediatric practice contribute similar numbers of varicella cases in each season.

#: assuming that cases from general practitioner practices represent approximately 35% of all varicella cases treated by a physician.

§: assuming that, on average, untreated cases represent approximately 20% of all paediatric varicella cases in each season (Streng et al. [24]).

Streng et al.

Streng et al. BMC Infectious Diseases 2013 13:303   doi:10.1186/1471-2334-13-303

Open Data