Health officials in Pakistan say they have failed to immunise over 160,000 children against polio due to rumours the vaccine causes sexual impotence.
Parents in parts of northern Pakistan told the BBC news website they feared an "American conspiracy" to cut the fertility of the next generation.
Amirullah Khan, a resident of NWFP's Swat district, quoted Maulana Fazlullah of a local FM channel as telling his listeners the vaccination drive was "a conspiracy of the Jews and Christians to stunt the population growth of Muslims".
In some areas immunisation teams were beaten up by local people, officials said.
Elsewhere parents just refused to get their children immunised.
If they can't get their heads out of their butts and accept health from people, then let them die off and go to hell in their own way. I refuse to have any sympathy for fools.