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Table 3 Seropositivity to L. intracellularis in commercial pigs by breed

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)
  1. #Number of pigs tested, number of pigs positive to the L. intracellularis ELISA test and apparent and true prevalence of L. intracellularis seropositivity, by breed.
  2. Number of pigs seropositive to L. intracellularis per 100 pigs tested.
  3. a-a,b-b,c-cTrue prevalence estimates with the same superscript significantly different at the alpha level of 0.05.