Pfizer, the US multi-national pharmaceutical giant, who are working with German partner BioNTech, announced that their Covid-19 vaccine is 95% effective, according to final results from final trials. Pfizer said it had the required two-months of safety data and would now be making an application for emergency US authorisation within a matter of days. The Pfizer/BioNTech vaccine has been tested on volunteers in six countries. The findings are interim and studies are continuing but it has been reportedly tested on 43,500 people in six countries and no safety concerns have been raised so far. The jab is known as a messenger RNA (mRNA) vaccine, which uses the virus’s genetic code rather than any part of the virus itself, is injected into the body where it enters cells and tells them to create antigens.