The maximum local production of C. caviae-specific IgA was recorded on dpi4 (vs. negative control (nc): P<0.05 for 1×102 IFU and 1×104 and P<0.005 for 1×106 IFU) and gradually decreased during the post-infection follow-up period (vs. nc: on dpi7 and dpi14 P<0.05, and on dpi21 P>0.05 for all infected groups). The gene discussed is CD79A; the disease is infection.