Re: Myth of herd immunity
Not only can vaccinated individuals spread pertussis, but according to the CDC itself vaccinated individuals are at a HIGHER risk than unvaccinated of being infected with strains that now, thanks to vaccine pressure, seem to be predominant in the US.
https://www.jeremyrhammond.com/2015/09/14/the-ugly-untold-truth-about-the-pertussis-vaccine/