There’s loads of misinformation online about vaccines. For years, there have been false claims about the tetanus jab causing infertility. One of our listeners, Henry, got in touch to ask us if they were true. Fauziyya Tukur, a BBC Disinformation journalist in Abuja, looks into the claims with us.

The BBC's medical editor, Fergus Walsh explains why vaccine hesitancy is on the rise around the world - and the impact vaccines have had on global health. And we hear from Sahar Baloch, a BBC journalist in Islamabad, who talks about efforts to eradicate polio in Pakistan, amid misinformation about the jab (fuelled in part by a CIA fake vaccine campaign to seek out Osama bin Laden!).

Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Alex Rhodes Producers: Julia Ross-Roy and Maria Clara Montoya Editors: Verity Wilde and Simon Peeks