Daily recorded sickness measures (A, body weight; B, rectal temperature; C, feeding score) for control (13 and 20 d after inoculation combined, n = 14 total) and PRRSV (13 and 20 d after inoculation combined, n = 19 total) piglets throughout the course of the study. Body weight was measured from the start of the experiment, and rectal temperature and feeding score were measured beginning 1 d before inoculation. Data are LSM ± SEM. Contrasts were used to separate treatment means on each day *p < 0.05. #p < 0.10.