Figure 6
Virus titers in the respiratory tract 3 days post-challenge with A/swine/Gent/8/2018. The black dots represent virus titers of individual pigs, the bars represent the mean virus titer ± the standard deviation. Each color represents a different group. Dotted lines indicate the detection limit. Virus titers in nasal swabs are expressed in log10 TCID50/100 mg nasal secrete, virus titers in the trachea and lung are expressed in log10 TCID50/g tissue. Significant reductions of virus titers as compared with the challenge control group are indicated by asterisks. *p < 0.05; **p < 0.01.