Figure 1.
Antibody-positivity in relation to duration of exposure *shepherds: 0–5 years: n=5, 6–10: n=5, 11–20: n=6, 21–30: n=16, 31–40: n=11, >40: n=16 veterinarians: 0–5 years: n=13, 6–10: n=7, 11–20: n=9, 21–30: n=9, 31–40: n=9,>40: n=4.
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