Pakistan arrests anti-polio vaccination parents
Pakistani authorities have conducted their first-ever mass arrest of parents for refusing to allow their children to be vaccinated against polio.
Authorities in Peshawar, in the north-west of the country, detained 471 people and charged them with endangering public security.
The local government says they will only be freed once they have pledged in writing to vaccinate their children.
The Taliban prohibit vaccinations and have attacked health workers.
The Pakistani government has declared war on the disease.