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Table 1 The distribution of the 30 wild boar populations in the respective risk factor category, based on the answers in a questionnaire that accompanied the samples

From: Distribution of enteropathogenic Yersinia spp. and Salmonella spp. in the Swedish wild boar population, and assessment of risk factors that may affect their prevalence

Risk factors

Number (%) of populations in each category

Feeding intensity (feeding places/10 km2)

 < 3

7 (23.3)

 3–5

15 (50.0)

 5–10

3 (10.0)

 > 10

5 (16.7)

Years since establishment of population (years)

 < 3

1 (3.3)

 3–5

3 (10.0)

 5–7

4 (13.3)

 7–10

5 (16.7)

 > 10

17 (56.7)

Yearly harvest/10 km2 (animals)

 < 5

6 (20.0)

 5–15

12 (40.0)

 15–30

3 (10.0)

 30–50

5 (16.7)

 > 50

4 (13.3)

Handling of slaughter waste

 Made unavailable for wild boars

11 (36.7)

 Left out in the forest

19 (63.3)