Moderna announced this week that they have a vaccine that was 95% effective in trials. A joint project between Pfizer and BioNTech released similar statistics. So what does it all mean?
Two pharmaceutical giants appear on the verge of deploying promising weapons in the global fight against the Covid-19 pandemic.
On Monday, Moderna announced that its experimental vaccine was 95% effective.
On Wednesday, a joint project between Pfizer and BioNTech also said their vaccine was 95% effective after conducting final efficacy analyses. Last week the project had said initial results put the number at 91%.
On Thursday, the CEO of Pfizer said the company hoped to file for emergency-use authorization with the Food and Drug Administration on November 20.
But even if they are approved, it will still be months before they are available to the public in the US and other parts of the world.
Here are 5 things you need to know about these promising vaccines.