If using 3 times as much active ingredient is all that’s needed to make the vaccine more effective why didn’t Pfizer do it? Heck, why didn’t they use 15 or 20 times as much active ingredient?
If using 3 times as much active ingredient is all that’s needed to make the vaccine more effective why didn’t Pfizer do it? Heck, why didn’t they use 15 or 20 times as much active ingredient?