Episode Synopsis "Pfizer says COVID-19 vaccine over 90% effective "
US pharma company Pfizer and German firm BioNTech have said that their coronavirus vaccine is over 90 percent effective in preventing COVID-19 in those who have not contracted the infection, CNBC.com reported. According to data published from Pfizer and German firm BioNTech's late-stage vaccine trial, the results were based on the first interim efficacy analysis conducted by an external and independent Data Monitoring Committee of the phase three clinical study.