From: Widespread distribution of hepatitis E virus in Spanish pig herds
Percentage (positive/total) of anti-HEV IgG
Age (weeks)
3
5
7
11
15
20
All
6.9% (9/130)
3.3% (4/120)
1.7% (2/120)
1.4% (1/70)
31.0% (31/100)
17.5% (14/80)
9.8% (61/620)