The case comes amid a resurgence of polio in other parts of the country, officials announced on Saturday.

More than 33 million children under the age of five would be vaccinated in the door-to-door drive starting on Monday, polio chief Ayesha Raza said, as the total new cases this year rose to 17.

An eight-year-old boy from a rural neighbourhood of the capital Islamabad was crippled by the wild polio virus, said Anwarul Haq, Pakistan’s national coordinator for the disease.

The southwestern province of Balochistan that borders Afghanistan and Iran has been the worse-affected region this year with 12 new cases, the national data shows.

The spread of the virus to the region that was previously declared polio-free poses a fresh challenge for the eradication programme funded jointly by the United Nations and the Gates Foundation.

The polio cases in Pakistan peaked at 147 in 2019 but declined to only six last year.

Pakistan undertakes periodic immunisation drives, but the campaign is often targeted by the Islamist militants.

The militants and some Islamic clerics see the polio vaccination campaign as a ploy by the West to sterilise Muslims.