From: Varicella routine vaccination and the effects on varicella epidemiology – results from the Bavarian Varicella Surveillance Project (BaVariPro), 2006-2011
Ratio
RRF
Season 2 / Season 1
Season 3 / Season 2
Season 4 / Season 3
Season 5 / Season 4
Age group (years)
<1
0.698
0.743
0.670
0.815
1-4
0.676
0.749
0.594
0.847
5-9
0.732
0.906
0.660
0.842
10-16
0.856
0.908
0.868
0.927