Table 2. Distribution of anthrax seroprevalence in feral swine by region, sex, and age group.

Predictor	No. tested	No. positive	Apparent seroprevalence, %
Region
Endemic	243	121	49.49
Nonendemic	235	88	37.45
Sex
M	231	90	38.96
F	247	119	48.18
Age group
Subadult	53	19	35.85
Adult	425	190	44.71