Is the annual flu vaccine sales pitch (evident not just in the U.S. but around the world) working?

Given predictions of a 50% increase in the global influenza vaccine market by 2023 (from $5 billion to $7.5 billion), it would seem so.

On the other hand, recent estimates of influenza vaccine coverage in U.S. adults show that Americans are growing more, rather than less, skeptical.

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