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Table 1 Frequency distribution (n) of 69 Dutch finishing pig farms, their tested sera, and the positive tested sera related to the percentage of within-farm T. gondii positive seroprevalence

From: Potential risk factors for the presence of anti-Toxoplasma gondii antibodies in finishing pigs on conventional farms in the Netherlands

Seroprevalence at finishing pig farm (%) N (%) farms N sera tested N sera positive
0 25 (36) 800 0
0–5 19 (27) 2836 51
5–10 8 (12) 555 33
10–20 11 (16) 744 106
 > 20 6 (9) 199 69
Total 69 (100) 5134 259