Objective: To assess whether the influenza peak in populations precedes the annual peak for invasive pneumococcal infections (IPI) in winter.
Design: Ecological study. Active surveillance data on influenza A and IPI in children up to 16 years of age collected from 1997 to 2003 were analyzed.
Setting: Paediatric hospitals in Germany.
Patients: Children under 16 years of age.
Results: In all years under study the influenza A season did not appear to affect the IPI season (p=0.49). Specifically, the influenza peak never preceded the IPI peak.
Conclusion: On a population level there was no indication that the annual influenza epidemic triggered the winter increase in the IPI rate or the peak of the IPI distribution in children.
- invasive pneumococcal infections
- streptococcus pneumoniae
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