Coronavirus: How bad information goes viral

A closer look at the story of a post, featuring misleading coronavirus diagnosis advice from an "uncle with master's degree", which hopped from the Facebook profile of an 84-year-old British man to the Instagram account of a Ghanaian TV presenter, through Facebook groups for Indian Catholics to coronavirus-specific forums, WhatsApp groups, and Twitter accounts.

You can listen to a more detailed version of the investigation here and watch an overview of how BBC disinformation experts traced the origin and mutation of the post here.