1.0Determinants/determinantscuthemeedtr5/determinants/author/cuthemeedtr5/rich600338<blockquote class="wp-embedded-content" data-secret="bBFjPCwuUx"><a href="/determinants/2015/john-snow-in-space-and-time/">John Snow in Space and Time</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="/determinants/2015/john-snow-in-space-and-time/embed/#?secret=bBFjPCwuUx" width="600" height="338" title="“John Snow in Space and Time” — Determinants" data-secret="bBFjPCwuUx" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=/determinants/wp-includes/js/wp-embed.min.js /* ]]> */ </script> /determinants/wp-content/uploads/sites/79/john-snowpost.jpg300230The cholera maps of John Snow have long captured health geographers and epidemiologists. Much has been written on this in recent years, most notably the superb book by Steven Johnson, Ghost Map. An upcoming article in the International Journal of Health Geographics provides perhaps the only research insight into the cholera event itself, using a detailed […]