Figure 2
From: Maternally-derived antibodies do not prevent transmission of swine influenza A virus between pigs
Swine influenza A serological profiles observed in the different piglet groups. Serological profiles (ELISA LSI, boxplot) of piglets having high initial antibody levels and showing continuous antibody decay without serological response after infection (MDA +H , dark blue), piglets having low initial antibody levels and showing moderate serological response after infection (MDA +L , light blue) and piglets without maternally-derived antibodies and showing a marked serological response after infection (MDA−, red).