@theconversation.com 4 years ago Pfizer COVID vaccine: promising results – here's what needs to happen next
@theguardian.com 4 years ago Covid-19 vaccine candidate is 90% effective, says manufacturer
@theguardian.com 4 years ago Pfizer/BioNTech vaccine announcement is cause for cautious celebration
@abc.net.au 4 years ago Pfizer says early COVID-19 vaccine data suggests its shots may be 90 per cent effective. But that figure could change
@snopes.com 4 years ago Pfizer Says Early Data Signals COVID-19 Vaccine is Effective