Cold spells and health: prevention and warning

Area of Science:

• Public Health
• Environmental Health
• Biometeorology

Background:

• Cold weather poses significant risks to community health.
• Effective public health strategies are needed to mitigate cold-related health impacts.
• Predictive tools can enhance the timeliness and efficacy of interventions.

Purpose of the Study:

• To identify meteorological thresholds for triggering cold-weather public health interventions.
• To evaluate the relevance of an alert system for preventive measures.
• To inform the development of strategies for protecting the population from cold.

Main Methods:

• Utilized pertinence criteria to assess the suitability of an alert system.
• Employed time-series models in pilot cities to identify mortality-relevant temperature thresholds.
• Investigated the predictive capacity of meteorological indicators for cold-related health impacts.

Main Results:

• Combined minimum and maximum temperatures are optimal predictors of cold-related mortality.
• Identified specific temperature thresholds for Paris (-9°C min, -2°C max) and Marseille (-3°C min, +4°C max).
• Reaching these thresholds indicates a >15% risk of excess mortality.

Conclusions:

• Simple meteorological indicators can improve the detection of dangerous cold episodes.
• Long-term solutions like housing insulation and heating support are vital for sustained prevention.
• A combination of timely alerts and long-term strategies is essential for public health protection.