Figure 4.

Age distribution of cases with pandemic influenza (H1N1) 2009 infection in Germany from week 24 to week 45 in 2009; age distribution in weeks 24 to 41 (initiation period) and in weeks 42 to 45 (acceleration period).

Poggensee et al. BMC Infectious Diseases 2010 10:155   doi:10.1186/1471-2334-10-155
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