Guinea worms

It's war on tropical diseases

Sarah Boseley

But experts warn that drugs alone will not win it, after the pharmaceutical giants agree to work together on an ambitious project.

Stamping out Guinea worm 'dragons' in Sudan

Peter Martell

Scars on Severion Wayet's arms reveal where the flesh-burrowing Guinea worms burst through her skin.

Fighting the 'fiery serpent' in Sudan

Skye Wheeler

Rheumy-eyed Chief Joseph Lokoi has lived through two civil wars in south Sudan, but the scars covering his body are not the relics of battle.