Figure 2.

Nasal wash virus titres of ferrets. Virus titres were measured in nasal washes of CBNU-nCoV02-infected ferrets and direct contact sentinel ferrets at 2, 4, 6, 8, 10 days of reinfection. Viral loads in nasal washes were measured by TCID₅₀ (A). The virus RNA copy numbers were measured with qRT-PCR (B). The limit of viral RNA detection with qRT-PCR is 0.3 log₁₀ copies/mL copies per reaction. Data is presented as mean ± SEM. Asterisks indicate statistical significance between the control (Group 1) and each infected group as determined by two-way ANOVA and subsequent Dunnett’s multiple comparisons test (* indicates p < 0.05, ** indicates p < 0.01, *** indicates p < 0.001, and **** indicates p < 0.0001).