CP and Decreased total leukocyte count: WBC counts between 1.0–2.0 × 109 L−1 were classified as moderate leukopenia, and counts < 1.0 × 109 L−1 indicated severe leukopenia.[22] In hamsters treated with 140 mg kg−1 CP, intranasal inoculation with VSVΔG‐S or VSVMT‐S resulted in significant weight loss or mortality (Figure S4C, Supporting Information).