Comparison of Immune Responses in Pigs Infected with Chinese Highly Pathogenic PRRS Virus Strain HV and North American Strain NADC-20

Fig. (1) Fever, mortality rate and loss of body weight after PRRSV infection. (A) Rectal temperatures of all pigs were monitored daily after PRRSV infection. (B) Survival rate. (C) Fold of total body weight gain during the duration of the experiment was calculated by considering the weight of the pig on day 0 as 1. Each bar represents the average of five pigs ± SEM. *p<0.05.