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We don't do phase III trials for the flu vaccine every year. Instead we follow the same production formula for the new virus variant. Why not with COVID? The FD
by wbl 5y ago
We don't do phase III trials for the flu vaccine every year. Instead we follow the same production formula for the new virus variant. Why not with COVID? The FDA agrees this is desirable but is just foot dragging.
- jhayward 5y agoDo you think there might be some difference in "changes each year for flu vaccine" and "changes for every other vaccine"? Like perhaps, how much study the practice of flu vaccine changes has undergone, what the limited target constraints are, and prior field experience with the sterotypical changes to those specific targets?