Pakistan is one of the few countries in the world still affected by the polio virus.<br /><br />Now, in an unusual effort to eliminate the disease, health workers are stopping vehicles at a busy toll booth outside Islamabad to administer free polio vaccination drops to children under the age of five.<br /><br />The government hopes to eradicate the virus by the end of the year, but many people do not believe that they will reach this target.<br /><br />Al Jazeera's Imtiaz Tyab reports from Islamabad.
