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. 2010 Jul 15;147(3):329–339. doi: 10.1016/j.vetmic.2010.07.005

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Fig. 2 — Adjusted within herd antibody detection frequency (with 95% confidence interval) of M. hyopneumoniae (Mhp), A. pleuropneumoniae serogroup 1-9-11 (App1-9-11) and serotype 2 (App2) during two successive gestation and lactation periods (cycles 1 and 2) (5 farrow-to-finish herds, 184 sows, 8 sampling times, ELISA assays, Generalized Estimation Equations with an exchangeable correlation matrix). 9wBFar: 9 weeks before farrowing; 4wBFar: 4 weeks before farrowing; 1wAFar: 1 week after farrowing; 4wAFar: 4 weeks after farrowing.