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Table 3 Study on Brucella abortus seropositivity in cattle of three villages around Maasai Mara national reserve (Kenya): herd characteristics and results from a questionnaire on risk practices and clinical signs compatible with brucellosis in cattle and in humans handling livestock

From: Brucella seroprevalence in cattle near a wildlife reserve in Kenya

  Overall (N = 75) Lemek (N = 25) Mara Rianta (N = 25) Endoinyo Narasha (N = 25)
Cattle herd size 109 (5–400) 97 (15–300) 144 (14–400) 85 (5–300)
Years of operation 34.6 (5–70) 35.32 (15–60) 37.08 (15–70) 31.44 (5–70)
Grazing in reserve 60% 32% 100% 48%
Bought livestock during the last year 79% 88% 64% 84%
Contact with wildlife reported by the farmer  
 Ungulates 100% 100% 100% 100%
 Predators 76% 52% 100% 76%
 Monkeys 35% 0% 36% 68%
Contact with other livestock reported by the farmer
 Cattle 100% 100% 100% 100%
 Goats 80% 92% 48% 100%
 Sheep 80% 92% 48% 100%
 Pigs 0% 0% 0% 0%
 Poultry 0% 0% 0% 0%
Signs of illness noticed in cattle
 Fever 4% 8% 4% 0%
 Fatigue 0% 0% 0% 0%
 Reduced fertility/abortion and/or stillbirth 51% 48% 68% 36%
 Decrease in milk production 9% 12% 4% 12%
 Mastitis/udder swelling and/or pain 23% 32% 24% 12%
Self-reported signs of illness experienced by people handling the animals
 Fever 45% 44% 48% 40%
 Sweats 15% 16% 16% 12%
 Malaise 31% 20% 20% 52%
 Headache 57% 60% 48% 64%
 Pain in muscles, joints and/or back 57% 56% 52% 64%