## 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