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Exploring all-cause mortality surveillance during the Iberian Peninsula power outage, Spain, 28 April 2025
David García-García1,2, Inmaculada León-Gómez3,1,2, Lucía Pérez-Marín3,1,2
1Epidemiology and Public Health Biomedical Network Research Consortium (CIBERESP), Madrid, Spain.
Abstract:
A general power outage affected the Iberian Peninsula on 28 April 2025. We explored all-cause mortality in Spain using the monitoring system MoMo. Starting 28 April, over 3 days, 147 excess deaths (95% CI: - 35 to 330) appeared to occur in the country, corresponding to a 4.2% increase over expected mortality. A larger significant 7.9% increase was estimated in 65-84-year-olds (94 excess deaths; 95% CI: 63 to 125). While MoMo cannot attribute such excesses to specific causes, findings highlight the usefulness of real-time surveillance systems for assessing large-scale emergencies.
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