Invasive Pneumococcal Disease in New Zealand, 2010

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberNumber of cases3.3 Disease incidence by seasonIPD showed the usual seasonality in 2010, with a marked peak of cases in the winter months,although this peak was less evident in the younger age groups (Figure 1).100Figure 1. Seasonality of invasive pneumococcal diseaseby age group, 2010806040200Monthall ages