Polio has been confirmed in 34 environmental samples during this year

Vaccination drive launched in eight very high-risk districts

Drive aims to reach 13.5 million children

Meeting reviews law and order situation in province

Week-long drive aimed to immunise two million children under the age of five in the provincial capital

Police cordons off the area, begin search operation

Authorities aim to vaccinate 4.4m children under five years of age

Chief minister lauds services of vaccinators

Says security should be provided to polio teams in sensitive union councils

Urges parents to cooperate with vaccinators and save their children's future