Ummm, they don't. It's amazing what two minutes of googling reputable sites will net you.
0.25mL prefilled syringe, 6–35 mos TIV* Fluzone Sanofi Pasteur
For H1N1 Inactivated*
0.25 mL prefilled syringe
An adult gets 5.0mL. Big difference, don't you think?
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