Virulent Properties of Russian Bovine Viral Diarrhea Virus Strains in Experimentally Infected Calves

Figure 2

The data on the dynamics of leukocyte concentration in 4–6-month-old calves after aerosol challenge by bovine viral diarrhea virus different noncytopathic strains of type 1 with the dose of 6 log₁₀ TCD₅₀. The values are presented as (, mean value; , 95% confidence interval) for , the number of animals per time point (1–10 days postinfection, p.i.); , the number of animals per time point (11–25 days p.i.); values obtained for the three strains 3–9 days p.i. are lower than in the control according to Mann-Whitney test and Student’s -test at ; values obtained for Bison strain 4–6 days p.i. are less than for Bor and T2 strains according to Mann-Whitney test and Student’s -test at ; values obtained for Bor strain 3 days p.i. are less than for T2 and Bison strains according to Mann-Whitney test and Student’s -test at .