We designed a prospective study to evaluate the effectiveness of an educational intervention designed to increase awareness and knowledge of pertussis among parents and grandparents of newborns. We also evaluated its effect on their willingness to receive the tetanus toxoid-diphtheria toxoid-acellular pertussis vaccine. There was a statistically significant (P < .05) increase in participants' knowledge about pertussis and in their willingness to receive vaccination after our education program. However, follow-up several months after participants underwent the intervention revealed that only 12 (8%) of 150 participants had been vaccinated.