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Do You Have to Wait for Your Second Dose to Kick In?
The first dose of the flue vaccine offers a significant degree of protection. The second dose increases that protection even more. So it really is important to wait to get that second dose, and to give that dose two to three weeks to really kick in before you start dropping your guard. i would urge everybody to get the second dose, to wait for it to kick in, and stick to the rules.