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France's heat health watch warning system
Mathilde Pascal1, Karine Laaidi, Martine Ledrans
1Department of Environmental Health, Institut de Veille Sanitaire, Saint Maurice, France.
International Journal of Biometeorology
|December 6, 2005
Summary
France developed a Heat Health Watch Warning System to predict heat waves and reduce excess mortality. This system uses temperature data and triggers preventive actions nationwide.
Area of Science:
- Public Health
- Environmental Health
- Meteorology
Background:
- Heat waves can cause significant excess mortality.
- Effective early warning systems are crucial for public health preparedness.
Purpose of the Study:
- To develop and implement a Heat Health Watch Warning System in France.
- To anticipate heat waves and mitigate their excess mortality impact.
Main Methods:
- Retrospective analysis of mortality and meteorological data from 14 pilot cities.
- Selection of meteorological indicators (minimum and maximum temperatures) and thresholds using sensitivity and specificity.
- Nationwide system extension using the 98th percentile of temperature distributions.
Main Results:
- A combined minimum and maximum temperature indicator was chosen.
- Thresholds were set to predict excess mortality (>100% in small cities, >50% in large cities).
- The system was activated nationwide on June 1, 2004.
Conclusions:
- The Heat Health Watch Warning System provides a framework for anticipating heat waves.
- Cooperation between meteorological, health surveillance, and health ministries is key.
- The system supports a national action plan with preventive measures against heat wave health impacts.
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