Volume 10, Number 1, January 2004

Influenza Epidemics in the United States, France, and Australia, 1972–1997

Cécile Viboud,*† Pierre-Yves Boëlle,*‡ Khashayar Pakdaman,* Fabrice Carrat,*‡ Alain-Jacques Valleron,*‡ Antoine Flahault*†‡
*Institute National de la Santé et de la Recherche Médicale, Paris, France; †World Health Organization Collaborating Center for Electronic Diseases Surveillance, Paris, France; and ‡Hôpitaux de Paris, CHU Saint-Antoine, Paris, France

Figure 3. Synchrony in the timing of the peaks of influenza epidemics for 26 influenza years (1972–1997). Correlation between the week of year of the epidemic peak A) in the United States (x axis) and in France (y axis). B, in the United States (x axis) and in Australia (y axis). C, in France (x axis) and in Australia (y axis). Panels b) and c) illustrate the scenario in which the influenza season in Australia is systematically 6 months before that of the United States or France. Similar results are obtained for the reverse scenario.

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This page last reviewed December 3, 2003

Emerging Infectious Diseases Journal
National Center for Infectious Diseases
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