Cassava Viral Disease Spreads at Alarming Rate | Virology News |

Scientists say a disease destroying entire crops of cassava has spread out of East Africa into the heart of the continent, is attacking plants as far south as Angola and now threatens to move west into Nigeria, the world's biggest producer of the potato-like root that helps feed 500 million Africans.

Photo: healthy cassava, Ed Rybicki, western Kenya, 1998