by University of California, Los Angeles Experimental schedule and weight loss after challenge. (A) Experiment schedule. Syrian hamsters (8/group, 4 females, 4 males) were immunized ID, IN, SQ, or PO three times on weeks 0, 3, and 6 with LVS ΔcapB vector (ΔcapB) or rLVS ΔcapB/MN (ΔcapB/MN) vaccine; challenged IN on week 10 with 104 PFU...