In 2003 in northern Nigeria – a country which at that time was considered provisionally polio free – a fatwa was issued declaring that the polio vaccine was designed to render children sterile.
En 2003 no norte de Nixeria, país que naquel entón estaba considerado provisionalmente libre de polio, emitiuse unha fatwā declarando que a vacina da polio estaba deseñada para deixar ós nenos estériles.