Heat-related mortality in Europe during the summer of 2022

• Published in: Nature Medicine Vol. 29; no. 7; pp. 1857 - 1866
• Main Authors: Ballester, Joan, Quijal-Zamorano, Marcos, Méndez Turrubiates, Raúl Fernando, Pegenaute, Ferran, Herrmann, François R., Robine, Jean Marie, Basagaña, Xavier, Tonne, Cathryn, Antó, Josep M., Achebak, Hicham
• Format: Journal Article Magazine Article
• Language: English
• Published: New York Nature Publishing Group US 01.07.2023; Nature Publishing Group
• Subjects: 692/700/1538; 692/700/478/174; Adaptation; Adolescent; Adult; Aged; Aged, 80 and over; At risk populations; Biomedical and Life Sciences; Biomedicine; Cancer Research; Child; Child, Preschool; Confidence intervals; Demography; Europe; Fatalities; Female; Heat; Hot Temperature; Humanities and Social Sciences; Humans; Infant; Infant, Newborn; Infectious Diseases; Italy; Life Sciences; Male; Metabolic Diseases; Middle Aged; Molecular Medicine; Mortality; Neurosciences; Santé publique et épidémiologie; Seasons; Spain; Summer; Young Adult; Italy; Europe; Spain
• ISSN: 1078-8956; 1546-170X; 1546-170X; 1744-7933
• DOI: 10.1038/s41591-023-02419-z

Over 70,000 excess deaths occurred in Europe during the summer of 2003. The resulting societal awareness led to the design and implementation of adaptation strategies to protect at-risk populations. We aimed to quantify heat-related mortality burden during the summer of 2022, the hottest season on record in Europe. We analyzed the Eurostat mortality database, which includes 45,184,044 counts of death from 823 contiguous regions in 35 European countries, representing the whole population of over 543 million people. We estimated 61,672 (95% confidence interval (CI) = 37,643–86,807) heat-related deaths in Europe between 30 May and 4 September 2022. Italy (18,010 deaths; 95% CI = 13,793–22,225), Spain (11,324; 95% CI = 7,908–14,880) and Germany (8,173; 95% CI = 5,374–11,018) had the highest summer heat-related mortality numbers, while Italy (295 deaths per million, 95% CI = 226–364), Greece (280, 95% CI = 201–355), Spain (237, 95% CI = 166–312) and Portugal (211, 95% CI = 162–255) had the highest heat-related mortality rates. Relative to population, we estimated 56% more heat-related deaths in women than men, with higher rates in men aged 0–64 (+41%) and 65–79 (+14%) years, and in women aged 80+ years (+27%). Our results call for a reevaluation and strengthening of existing heat surveillance platforms, prevention plans and long-term adaptation strategies. This ecological analysis using the Eurostat database estimated that summer 2022, the hottest summer on record, was associated with over 61,000 heat-related deaths across 35 countries in Europe, with the highest mortality rates in countries near the Mediterranean Sea.