1.0GuardianTVhttps://guardian.ng/tvAbiodun Ogundairohttps://guardian.ng/tv/author/abiodun/How do vaccines work? - GuardianTVrich600338<blockquote class="wp-embedded-content" data-secret="vINh3gQPOA"><a href="https://guardian.ng/tv/how-do-vaccines-work/">How do vaccines work?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://guardian.ng/tv/how-do-vaccines-work/embed/#?secret=vINh3gQPOA" width="600" height="338" title="“How do vaccines work?” — GuardianTV" data-secret="vINh3gQPOA" 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);
/* ]]> */
</script>
https://s3.eu-west-1.amazonaws.com/tv.guardian.ng/2025/08/nn-4.jpg1098758Hopes are high that a vaccine could soon help bring the coronavirus under control. One of the most promising candidates comes from German company BioNtech and its US partner Pfizer. But how does it actually work?