Martine Tabeaud

La baisse de température : un stimulus au déclenchement des épidémies de grippe en Tunisie ?

Les epidemies saisonnieres de grippe interviennent generalement, dans l’hemisphere nord, entre octobre et mars. Si les reseaux de communications et la promiscuite expliquent pour une large part la diffusion epidemique, les mecanismes du declenchement epidemique restent peu connus. Une etude menee a l’echelle de la France, sur une vingtaine d’annees, a mis en avant une situation meteorologique type – un « type de temps » – observee de maniere recurrente avant le declenchement des epidemies saisonnieres de grippe : la vague de froid par type de temps anticyclonique. La baisse de la temperature semble etre, de facto, une condition necessaire au declenchement epidemique. Cet article demontre, sur la base d’un croisement entre des donnees sanitaires et meteorologiques, que cette baisse de la temperature en periode pre-epidemique se produit egalement en Tunisie.In the northern hemisphere, the influenza epidemic season occurs between October and March. Communications networks and crowding explain most of the epidemic distribution. Little is known however, about the mechanisms of epidemic onset. A study analysed French health and meteorological data over a 20-year period and identified a typical meteorological situation, a specific kind of weather that was recurrently observed before the start of seasonal flu epidemics: a cold spell induced by anticyclone conditions. A temperature drop appears to be, de facto, a necessary trigger for the epidemic. This article, which crosses health and meteorological data for Tunisia, demonstrates that this drop in temperatures also occurs in the pre-epidemic period there.Exploration of the link between climate and influenza in Tunisia: preliminary study of the 2004-2005 epidemic season In the northern hemisphere, the influenza epidemic season occurs betweenOctober and March. Communications networks and crowding explain most of the epidemic distribution. Little is known however, about the mechanisms of epidemic onset. A study analysed French health and meteorological data over a 20-year period and identified a typical meteorological situation, a specific kind of weather that was recurrently observed before the start of seasonal flu epidemics: a cold spell induced by anticyclone conditions. A temperature drop appears to be, de facto, a necessary trigger for the epidemic. This article, which crosses health and meteorological data for Tunisia, demonstrates that this drop in temperatures also occurs in the pre-epidemic period there.

Exploration of the link between climate and influenza in Tunisia: preliminary study of the 2004-2005 epidemic season

Les epidemies saisonnieres de grippe interviennent generalement, dans l’hemisphere nord, entre octobre et mars. Si les reseaux de communications et la promiscuite expliquent pour une large part la diffusion epidemique, les mecanismes du declenchement epidemique restent peu connus. Une etude menee a l’echelle de la France, sur une vingtaine d’annees, a mis en avant une situation meteorologique type – un « type de temps » – observee de maniere recurrente avant le declenchement des epidemies saisonnieres de grippe : la vague de froid par type de temps anticyclonique. La baisse de la temperature semble etre, de facto, une condition necessaire au declenchement epidemique. Cet article demontre, sur la base d’un croisement entre des donnees sanitaires et meteorologiques, que cette baisse de la temperature en periode pre-epidemique se produit egalement en Tunisie.In the northern hemisphere, the influenza epidemic season occurs between October and March. Communications networks and crowding explain most of the epidemic distribution. Little is known however, about the mechanisms of epidemic onset. A study analysed French health and meteorological data over a 20-year period and identified a typical meteorological situation, a specific kind of weather that was recurrently observed before the start of seasonal flu epidemics: a cold spell induced by anticyclone conditions. A temperature drop appears to be, de facto, a necessary trigger for the epidemic. This article, which crosses health and meteorological data for Tunisia, demonstrates that this drop in temperatures also occurs in the pre-epidemic period there.Exploration of the link between climate and influenza in Tunisia: preliminary study of the 2004-2005 epidemic season In the northern hemisphere, the influenza epidemic season occurs betweenOctober and March. Communications networks and crowding explain most of the epidemic distribution. Little is known however, about the mechanisms of epidemic onset. A study analysed French health and meteorological data over a 20-year period and identified a typical meteorological situation, a specific kind of weather that was recurrently observed before the start of seasonal flu epidemics: a cold spell induced by anticyclone conditions. A temperature drop appears to be, de facto, a necessary trigger for the epidemic. This article, which crosses health and meteorological data for Tunisia, demonstrates that this drop in temperatures also occurs in the pre-epidemic period there.

Exploration du lien climat-grippe en Tunisie : étude préliminaire sur la saison épidémique 2004-2005

Les epidemies saisonnieres de grippe interviennent generalement, dans l’hemisphere nord, entre octobre et mars. Si les reseaux de communications et la promiscuite expliquent pour une large part la diffusion epidemique, les mecanismes du declenchement epidemique restent peu connus. Une etude menee a l’echelle de la France, sur une vingtaine d’annees, a mis en avant une situation meteorologique type – un « type de temps » – observee de maniere recurrente avant le declenchement des epidemies saisonnieres de grippe : la vague de froid par type de temps anticyclonique. La baisse de la temperature semble etre, de facto, une condition necessaire au declenchement epidemique. Cet article demontre, sur la base d’un croisement entre des donnees sanitaires et meteorologiques, que cette baisse de la temperature en periode pre-epidemique se produit egalement en Tunisie.In the northern hemisphere, the influenza epidemic season occurs between October and March. Communications networks and crowding explain most of the epidemic distribution. Little is known however, about the mechanisms of epidemic onset. A study analysed French health and meteorological data over a 20-year period and identified a typical meteorological situation, a specific kind of weather that was recurrently observed before the start of seasonal flu epidemics: a cold spell induced by anticyclone conditions. A temperature drop appears to be, de facto, a necessary trigger for the epidemic. This article, which crosses health and meteorological data for Tunisia, demonstrates that this drop in temperatures also occurs in the pre-epidemic period there.Exploration of the link between climate and influenza in Tunisia: preliminary study of the 2004-2005 epidemic season In the northern hemisphere, the influenza epidemic season occurs betweenOctober and March. Communications networks and crowding explain most of the epidemic distribution. Little is known however, about the mechanisms of epidemic onset. A study analysed French health and meteorological data over a 20-year period and identified a typical meteorological situation, a specific kind of weather that was recurrently observed before the start of seasonal flu epidemics: a cold spell induced by anticyclone conditions. A temperature drop appears to be, de facto, a necessary trigger for the epidemic. This article, which crosses health and meteorological data for Tunisia, demonstrates that this drop in temperatures also occurs in the pre-epidemic period there.