New Tagline Test;
Please recall the following:
1) Antibiotics are not active against viruses but against other microorganisms. Over time, biochemical characteristics of populations of microorganisms have changed in ways which have rendered some antibiotics less potent. This is consistent with "natural selection".
2) Flu shots are administered as a prophylactic against viruses. Referring to them in the tagline is inconsistent with the points raised in 1).
3) Flu shots also work by stimulating your body's immune system to attack the incoming virus (and presumably, some number of close mutations ;-) on its own, not by directly disrupting biochemical processes within the virus particles.
Please consider taking the new tag back to the body shop for further adaptation. ;-)
Full Disclosure: Pauling and Vitamin C!
Cheers!