coronavirus vaccine being developed by Sanofi won't need to be super-cooled and a normal refrigerator will suffice, the Paris-based drugmaker's France chief Olivier Bogillot said Sunday.His comments came days after American pharmaceutical giant Pfizer and its German partner BioNTech announced that their vaccine had proven 90% effective in preventing Covid-19 infections in ongoing Phase 3 trials involving more than 40,000 people.The companies said they expect to supply up to 50 million vaccine doses globally in 2020, and up to 1.3 billion doses in 2021.However, Pfizer's vaccine must be stored at -70 degrees Celsius (-94 degrees Fahrenheit) or else it falls apart, well beyond the capability of most hospital freezers let alone domestic.