Millions of farmers in Uganda and Tanzania are fighting the cassava mosaic disease (CMD) pandemic using new, resistant cassava varieties and other control methods. Government organisations and NGOs are multiplying and distributing these CMD-resistant varieties on a huge scale. And, new options, such as selecting clean planting material and identifying varieties resistant to the whiteflies that spread the disease, are also proving useful. Leaflets and a guide that describe CMD control strategies, developed by Ugandan and Tanzanian partners and validated by farmers, are available in different languages including English, Swahili and Luganda. The solid, scientific knowledge gained about control strategies and how they work will be invaluable to other countries threatened by CMD, such as Rwanda, Burundi, DR Congo, Republic of Congo, Gabon and Nigeria.