In the wake of the swine flu outbreak, virologist Dr Mike Leahy uses over 50 years of BBC archive to explore the history of pandemics - infectious diseases caused by bacteria, viruses and parasites.

Jeremy Vine, Sophie Raworth and Fergus Walsh travel through the UK and the world to expose the myths and the dangers of swine flu. Who is most vulnerable? How do you avoid it? And can the NHS cope?

In Cameroon there are fears that the practice of eating bushmeat - wild meat hunted in the rainforest, including endangered gorillas and chimpanzees - could trigger a new global pandemic of viruses. Unreported World investigates.