Table 1.
IgG anti-HEV prevalence in swine from commercial herds in the United States
| Herd | Age | No. of swine tested | No. of swine with anti-HEV (%) |
|---|---|---|---|
| A | 6 wk | 8 | 0 (0) |
| 12 wk | 8 | 0 (0) | |
| 20 wk | 8 | 8 (100) | |
| 26 wk | 8 | 5 (63) | |
| Adult | 25 | 14 (56) | |
| B | 3–4 wk | 8 | 0 (0) |
| 5–6 wk | 8 | 0 (0) | |
| 7–8 wk | 8 | 0 (0) | |
| 13 wk | 12 | 10 (83) | |
| 6 mo | 8 | 8 (100) | |
| Adult | 17 | 16 (94) | |
| C | 2 mo | 8 | 1 (13) |
| 3 mo | 8 | 8 (100) | |
| 4 mo | 8 | 4 (50) | |
| 5 mo | 8 | 8 (100) | |
| Adult | 8 | 8 (100) | |
| D | 2 mo | 10 | 2 (20) |
| E | 6 mo | 10 | 10 (100) |
| F | 6 mo | 10 | 10 (100) |
| G | 6 mo | 10 | 10 (100) |
| H | 8 mo | 10 | 10 (100) |
| I | >1 yr | 10 | 10 (100) |
| J | 1–2 yr | 10 | 10 (100) |
| K | 1–3 yr | 10 | 10 (100) |
| L | 2 yr | 10 | 10 (100) |
| M | 2–3 yr | 10 | 10 (100) |
| N | Adult | 19 | 15 (79) |
| O | Adult | 6 | 5 (83) |
| P* | Adult | 10 | 0 (0) |
*
Specific-pathogen-free (SPF) swine herd.