Explaining the results Professor Faust said: “There’s a hint from some of the people in the trial and some of the people in the trial who had had Covid…that vaccines might reach a ceiling and that will depend on the vaccine and the host immunity and the dose, and this true for the over-70s and the under-70s.”
Data on the vaccine ceiling is important for policy makers, says Faust as “the benefit of a fourth dose might be less in people who already have high levels of immune responses from recent infection or vaccination”.
As well as a limited boost in protection, individuals may be unwilling to suffer the potentially uncomfortable side effects that can occur as a result of the vaccine.
Common side effects of the vaccine include:
• A painful, heavy feeling and tenderness in the arm
• Headache or muscle ache
• Chills
• Nausea or vomiting
• Diarrhoea
• Feeling tired
• Fever.
if(typeof utag_data.ads.fb_pixel!==”undefined”&&utag_data.ads.fb_pixel==!0){!function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod?n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version=’2.0′;n.queue=[];t=b.createElement(e);t.async=!0;t.src=v;s=b.getElementsByTagName(e)[0];s.parentNode.insertBefore(t,s)}(window,document,’script’,’https://connect.facebook.net/en_US/fbevents.js’);fbq(‘init’,’568781449942811′);fbq(‘track’,’PageView’)}
