Thousands of 'invisible children' in Pakistan still susceptible to Polio: UNICEF
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George Laryea-Adjei, the Regional Director of United Nations Children's Fund (UNICEF) has said there are still hundreds of thousands of 'invisible children' who are susceptible to polio and must be vaccinated. Speaking in an interview with Dawn on Friday, he said: "There is a group of children called the 'missing children' whose parents are refusing for them to receive vaccines for various reasons.