Fig. 3
From: High prevalence of hepatitis E virus infection among domestic pigs in Ibaraki Prefecture, Japan
The natural infection status of HEV in piglets on the investigated farm. The piglets’ infection status is shown in chronological order. The horizontal axis shows the piglet’s age. (1) Anti-HEV IgM antibody titers. The optical density is shown on the vertical axis. (2) Anti-HEV IgG antibody titers. The optical density is shown on the vertical axis. (3) HEV gene copy numbers. The number of gene copies is shown on the vertical axis