TABLE 3.
Rates of serum antibodies against HEV in persons handing pig or not handling pigs
| Group | No. of persons | Age (yr)a | No. (%) positive for anti-HEVb | 
|---|---|---|---|
| Pig handlers | 30 | 42.8 ± 10 | 8 (26.7)c | 
| Pork workers | 20 | 44 ± 8 | 3 (15) | 
| Controls | 50 | 42.3 ± 4 | 4 (8)c | 
Values are means ± standard errors.
Human serum anti-HEV IgG was assayed with an ELISA kit from Genelabs Diagnostica.
P = 0.048 by Fisher's exact test.