Table 2.

AP and PR of IBR by age groups in cattle from Sotaquirá, Boyacá.

Age	n	Positives	AS (%)	TS (%)
< 1 year (6–12 months)	179	100	55.9	57.3
1–2 years	209	102	48.8	49.8
2–4 years	112	48	42.9	43.5
> 4 years	500	325	65	67

AS=Apparent seroprevalence, TS=True seroprevalence, IBR=Infectious bovine rhinotracheitis