From: Seroprevalence of Lawsonia intracellularis antibodies in intensive pig farms in China
Breed# | Number of pigs | Prevalence (95% CI)†| ||
---|---|---|---|---|
 | Positive | Tested | Apparent | True |
Landrace | 234 | 332 | 70 (59 to 82) | 98 (94 to 100)a |
Large White | 199 | 287 | 69 (56 to 82) | 96 (90 to 100)b,c |
Meishan | 97 | 211 | 46 (30 to 62) | 60 (44 to 76)a,b |
Jinhua | 72 | 230 | 31 (17 to 46) | 37 (22 to 52)c |
Total | 602 | 1060 | 57 (50 to 64) | 77 (66 to 87) |