The real vaccine? Pfizer claims its drug is 90% effective against Covid-19

News of a vaccine that is 90 percent effective against Covid-19 has sparked widespread hope across the world. The vaccine has been developed by the New York-based drug giant Pfizer and German company BioNTech. The EU Commission confirmed it will soon sign a contract with Pfizer and BioNTech for up to 300 million doses. We dig deeper with our panel and ask if this is the beginning of the end of the pandemic.