Pakistan, Afghanistan and Nigeria are the only countries in the world, where polio is endemic. And in contrast to recent years of gradual improvement, this year there have been at least 72 cases of polio in Pakistan after only eight in 2018.
Wild poliovirus type 3 is the second of three types of the crippling virus to be eradicated worldwide. Only type 1 still remains.
Total number of polio-affected children rises to 41 this year in Pakistan, where militant groups often target polio vaccinators and their security in several regions.
A Pakistani mother and daughter were killed in the country's southwestern city of Quetta. There was no immediate claim of responsibility for the attack.
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