Geometric mean titers of antibodies.

<p>C57BL/6 mice were infected with 3×10⁴ TCID₅₀ of ECTV intranasally. Mice were left untreated or immunized three days later with 5×10⁷ TCID₅₀ of MVA either intravenously or intranasally. Anti-MVA IgG titers were calculated by linear regression and defined as the serum dilution that resulted in an optical density of 0.30. Sera with OD value below 0.3 set to titer of 1 (negative). Geometric mean of neutralizing antibody titers by PRNT were determined as serum dilution able to neutralize 50% of the virus. Similar results were obtained in a separate experiment.</p><p>n.a. not applicable (mouse was dead or bleeding was not possible).