WhatsApp has engaged teams of scientists to help beat its fake news problem
(World News Brazil)

Last February, Cadbury Chocolate fell victim to a hoax. The image below went viral in an Indonesian WhatsApp group called `Viral Media Johor`, and later in a Nigerian group. Obviously, the post was fake news. The man in the image is Aminu Ogwuche, who was arrested on suspicion of involvement with the bombing of a Nigerian bus station back in 2014. He has never worked for Mondelez, the company that makes Cadbury chocolate, and their products are not infected with HIV. Indeed, it´s not even possible to contract HIV from eating food contaminated with HIV-positive blood. This is a hoax. But the problem that this story and others like it pose is real. Rumours, hoaxes and misinformation find...