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I wonder what will happen with the vaccine deals that governments have been doing. Like, what if they pre-ordered from one manufacturer whose vaccine proves inf

• bluGill 6y ago
  There are not enough per-orders to vaccinate everyone even if they all pass trials, and nobody has the ability to manufacture enough to vaccinate the world alone in a reasonable time period anyway. If all the early vaccines pass trails we can start opening up the world in 6 months. If they is the only one we are more than a year away. That said, all the deals are contingent on being effective. With this being 90% effective that sets a bar for the others. The FDA has previously said they need your vaccine to be 50% effective to approve it. However with this being 90% effective they are unlikely to approve one that is only 50% effective. Unlikely doesn't mean they won't: different allergic reactions; usefulness in different age groups; ability to ship to remote groups; difference in effectiveness to some minority: all are factors that may make some vaccine approved even if it is clearly the worse one to get overall.