The fourth Horseman of the Apocalypse: the demographic impact of the 1918-1920 flu in Latin Europe and Catalan-speaking regions Authors Jordi Maluquer de Motes Institut d'Estudis Catalans Keywords: Pandemic, influenza, flu, immunity, Latin Europe, Catalan-speaking regions. Abstract The influenza pandemic of 1918 (Spanish flu) is the biggest health catastrophe in history. This article attempts to provide a preliminary analysis of its impact, giving an account of the mortality it caused in Latin Europe and in each Catalan-speaking region. Using the 1910-1917 data as a reference set, the method applied provided a non‐epidemic baseline for 1918-1920. Excess mortality is the mortality observed above this baseline and represents the deaths attributable to the flu pandemic. During the Spanish flu, excess mortality in 1918 totalled 1.23 million, 1.06% of Latin Europe’s population. In Spain, excess mortality in 1918-1920 was 319,662, 1.49% of the total population, while in the Catalan-speaking regions it was 63,419, 1.36 % of the total population.Keywords: Pandemic, influenza, flu, immunity, Latin Europe, Catalan-speaking regions. Downloads Download data is not yet available. Downloads PDF (Català) How to Cite Maluquer de Motes, J. (2021). The fourth Horseman of the Apocalypse: the demographic impact of the 1918-1920 flu in Latin Europe and Catalan-speaking regions. Butlletí De La Societat Catalana d’Estudis Històrics, (31), 393–441. Retrieved from https://revistes.iec.cat/index.php/BSCEH/article/view/148737 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Issue No. 31 (2020) Section Articles License The intellectual property of articles belongs to the respective authors.On submitting articles for publication to the journal Butlletí de la Societat Catalana d'Estudis Històrics authors accept the following terms:Authors assign to Societat Catalana d'Estudis Històrics (a subsidiary of Institut d’Estudis Catalans) the rights of reproduction, communication to the public and distribution of the articles submitted for publication to Butlletí de la Societat Catalana d'Estudis Històrics.Authors answer to Societat Catalana d'Estudis Històrics for the authorship and originality of submitted articles.Authors are responsible for obtaining permission for the reproduction of all graphic material included in articles.Societat Catalana d'Estudis Històrics declines all liability for the possible infringement of intellectual property rights by authors.The contents published in the journal, unless otherwise stated in the text or in the graphic material, are subject to a Creative Commons Attribution-NonCommercial-NoDerivs (by-nc-nd) 3.0 Spain licence, the complete text of which may be found at https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.en. Consequently, the general public is authorised to reproduce, distribute and communicate the work, provided that its authorship and the body publishing it are acknowledged, and that no commercial use and no derivative works are made of it.The journal Butlletí de la Societat Catalana d'Estudis Històrics is not responsible for the ideas and opinions expressed by the authors of the published articles.