Polio used to paralyse tens of thousands of children every year.
Much of the world is now free of the disease, including Africa.
The World Health Organization declared the success four years after the last naturally-occurring polio case in Nigeria.
Polio is still endemic in Afghanistan and Pakistan.
What are the challenges to eradicating the virus?
And are there lessons for the battle to contain COVID-19?

Presenter: Imran Khan

Guests:

Dr Hamid Jafari - Director, Polio Eradication, W.H.O. Eastern Mediterranean Region

Dr Derek Gatherer - Virologist and Lecturer, Lancaster University

Dr Susan Mercado - Strategic Adviser, ICRC Asia Pacific

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