Comment Re:Slashdotters, do your part! (Score 1) 1051
Yeah, herd immunity is just a card played against the freedom argument. It can't exist even theoretically for flu vaccine (where it's often proposed to exist) because flu vaccine is not effective enough, and it can't exist for pertussis. Why not? Because the acellular pertussis vaccine results in a substantial population which can spread the disease asymptomatically. It doesn't matter that the vaccine protects them from systems, they don't contribute to herd immunity because they can still pass the disease on.