covid-19November 9, 2020 Pfizer says early data shows Covid-19 vaccine is 90 percent effective, higher than expected “Today is a great day for science and humanity,” Albert Bourla, Pfizer’s chairman and chief executive, said in a statement. Related posts U.K.'s Johnson launches mass testing…Do you need a Covid-19…What's behind workers' hesitation to…Fully vaccinated people can travel…Younger Latino men are Covid's…Salmonella infections in eight states…Salmonella infections in eight states…The U.S. isn't losing to…Virus-killing robot tested for use…In Covid fight, Cuba touts…