The diffusion of cholera in Egypt, 1947: a time-space analysis of one of the largest single outbreaks in the twentieth century

Smallman-Raynor, Matthew; Cliffe, Andrew

Abstract

The epidemic of cholera that spread through Egypt in the latter months of 1947 was one of the largest single outbreaks of the disease in the twentieth century. Using a swash–backwash model, this paper examines the geographical wave-like spread and subsequent retreat of the epidemic from an apparent origin in the settlements and prisoner-of-war camps of the Nile Delta area to reach its maximum geographical extent some six weeks later at Aswan (850 km away). Our results demonstrate the very rapid spatial advance of the epidemic wave through the provinces and governorates of Egypt, with an approximately linear sequence of progression up the Nile. Superimposed on this national pattern are pronounced differences in the rate of epidemic advance in the traditional geographical divisions of Lower and Upper Egypt. Alternative visualisations of the cholera spaces of Egypt, using techniques of multidimensional scaling (MDS) and cluster analysis, underscore the differential patterns of cholera transmission in these areas of the country. The patterns are interpreted in relation to a vigorous control effort that included restrictions on public transport, patient isolation, contact tracing and mass vaccination of the entire population exposed to risk of infection.

Citation

Smallman-Raynor, M., & Cliffe, A. (2016). The diffusion of cholera in Egypt, 1947: a time-space analysis of one of the largest single outbreaks in the twentieth century. Journal of Historical Geography, 54, https://doi.org/10.1016/j.jhg.2016.07.010

• Journal Article Type: Article
• Acceptance Date: Jul 28, 2016
• Online Publication Date: Aug 27, 2016
• Publication Date: Oct 1, 2016
• Deposit Date: Jul 29, 2016
• Publicly Available Date: Aug 28, 2018
• Journal: Journal of Historical Geography
• Print ISSN: 0305-7488
• Electronic ISSN: 1095-8614
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 54
• DOI: https://doi.org/10.1016/j.jhg.2016.07.010
• Keywords: Cholera; ; Cluster analysis; Egypt; 1947 epidemic; Spatial wave propagation; Swash–backwash model
• Public URL: https://nottingham-repository.worktribe.com/output/808255
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0305748816300718
• Contract Date: Jul 29, 2016