Understanding 'perceptions' is critical for all vaccination efforts, not only polio eradication.

Because Pakistan is the country with the most daunting challenges for ending transmission of endemic poliovirus, the work of Habib et al in this issue is critical for achieving polio eradication globally. Understanding why immunization programs are not reaching all children is important for success in reducing spread of all vaccine preventable diseases. The methods and insights are important for public health generalists, not only those employed in the pursuit of polio eradication.