Flow chart for the engagement of imams in the poliomyelitis eradication initiative.

<p>A flow chart illustrating the different groups that facilitated the recruitment of the Jumu'a (Friday) and regular prayer imams into the PEI. Double-direction arrows indicate collaboration or consultation, while single-direction arrows denote selection or application.</p

Poliomyelitis-prevalent states of northern Nigeria.

<p>A line map of Nigeria showing the states (gold) where incident poliomyelitis cases were detected.</p

Pattern of occurrence of cases of wild poliovirus and circulating vaccine-derived poliovirus in Nigeria from 2009 to 2013.

<p>This figure summarizes the number of incident (A) WPV and (B) cVDPV cases in Nigeria during the period from 2009 to 2013. The color scheme represents the increasing intensity of incidence from white (zero) to light yellow, to gold, to orange, to red, and to dark red.</p