From: Risk factors for the incursion, spread and persistence of the foot and mouth disease virus in Eastern Rwanda
Farming system
Zero-grazing
Semi zero-grazing
Number of farms (%)
At least one outbreak in the last 5 years
 Yes
16/40 (40)
20/102 (19.6)
 No
24/40 (60)
82/102 (80.4)
Total
40 (27.97)
102 (71.33)