A Covid-19 vaccine being developed by Pfizer and BioNTech has been proved to be 90% effective in people.

The vaccine has been tested on 43,500 people from 6 different countries. Further analysis found that people who were given the two-dose vaccine and were found to be protected from the virus 28 days after their first inoculation.

The vaccine is now to be handed over to health authorities for emergency approvals in the coming weeks. This also means that the vaccine can be on the market by the end of this year, making it the first approved Covid-19 vaccine.