{"version":"1.0","provider_name":"Educational Evidence","provider_url":"https:\/\/educationalevidence.com\/en\/","author_name":"educational EVIDENCE","author_url":"https:\/\/educationalevidence.com\/en\/author\/educational-evidence\/","title":"The forgotten \u2018Vaccine Expedition\u2019: a deed without parallel - Educational Evidence","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"FJie1ItF75\"><a href=\"https:\/\/educationalevidence.com\/en\/the-forgotten-vaccine-expedition-a-deed-without-parallel\/\">The forgotten \u2018Vaccine Expedition\u2019: a deed without parallel<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/educationalevidence.com\/en\/the-forgotten-vaccine-expedition-a-deed-without-parallel\/embed\/#?secret=FJie1ItF75\" width=\"600\" height=\"338\" title=\"&#8220;The forgotten \u2018Vaccine Expedition\u2019: a deed without parallel&#8221; &#8212; Educational Evidence\" data-secret=\"FJie1ItF75\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!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);\n\/\/# sourceURL=https:\/\/educationalevidence.com\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2025\/11\/Maria_Pita_por_Francisco_Perez.jpg","thumbnail_width":590,"thumbnail_height":380,"description":"Exactly 223 years ago, on 30 November 1803, the corvette Mar\u00eda Pita slipped out of the harbour at La Coru\u00f1a, marking the beginning of the Real Expedici\u00f3n Filantr\u00f3pica de la Vacuna (Royal Philanthropic Vaccine Expedition)\u2014an extraordinary venture whose purpose was to carry the smallpox vaccine to the furthest outposts of the Spanish Empire."}