IFNA1 and infection: Therefore, altogether these data suggested that IFN-α response had probably played a primary role in the interference between both infections, it is noteworthy that the dispersions of data showed in both Figure 7a,b (represented by the blue, red and green ellipses) are much higher for the super-infected group compared to the single-infected groups, suggesting that super-infection leads to more heterogeneous responses than PRRSV or swIAV single-infections.