Analysis of the different samples collected from VACV-GP2–infected mice.

P = positive; N = negative; OS = oral swab; Lu = lung; To = tonsil; To = tongue; Ki = Kidney; He = heart; Li = liver; Sp = spleen; ML = mandibular lymph node; Il = ileum; Bl = bladder; NA = neutralizing antibodies. (-) represents the times when there was no samples collection. Feces, blood, oral swabs (Oss), and tissues were collected at different times, and the nested-PCR, IHC, and PRNT techniques were performed.