Opinion: With 128 Covid vaccines in clinical development, we don’t know if the approved/authorized ones are the best ones
Pfizer/BioNTech. Moderna. Johnson & Johnson. AstraZeneca.
These are the marquee names that spring to mind when you think of the vaccine companies at the forefront of the global fight against Covid-19. And for good reason: together they have manufactured the majority of the estimated 7 billion-plus Covid vaccine doses administered to date around the world.
