African cassava mosaic virus (ACMV, ICTV approved acronym) is a plant pathogenic virus of the family Geminiviridae that may cause either a mosaic appearance to plant leaves, or chlorosis, a loss of chlorophyll. In Manihot esculenta (cassava), a highly valuable African food crop, the virus is the only known plant virus for cassava and causes severe mosaic. Cassava is a food crop in many places throughout the tropics and subtropics as a source of carbohydrates, but the transmission and severity of disease for cassava in Africa is greatest with ACMV.