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

Figure 1

The data on the dynamics of rectal temperature 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 5–8 days p.i. are higher than in the control according to Mann-Whitney test and Student’s -test at ; values obtained for Bison strain 3–6 days p.i. are higher than for T2 and Bor strains according to Mann-Whitney test and Student’s -test at ; values obtained for Bison strain 10 and 11 days p.i. are higher than for T2 strains according to Mann-Whitney test and Student’s -test at .