Figure 3.

Virus excretion and clinical scores in SPF mini pigs immunized and challenged with the homologous virus (A/Iraq/24/64) (Exp 2). Nasal swabs and serum samples were collected from 0 to 10 and 13 and 16 dpc. Additionally, serum was collected at 0, 1, 2, and 3 wpv. The figure illustrates the virus excretion levels and clinical scores recorded throughout the experiment. C, challenge test group; ID, intradermal; IM, intramuscular; SPF, specific pathogen-free; dpc, days post-challenge; wpv, weeks post-vaccination.