2.1 | Clinical samples
During passive surveillance undertaken in the period 2009-2018, epithelium tissues (n=265) were collected from suspected cases of FMD in 10 Sudanese states: Khartoum, River Nile, Gezira, Al Qadarif, White Nile, Blue Nile, North Kordofan, Kassala, North and South Darfur. Each year between 15 and 30 samples were collected except for 2013 and 2014 when more than 100 samples were collected.