Assertion: foal | /r/HasProperty | followed by booster
Facets:
value: at 4 to 6-week intervals
type: TEMPORAL
Source sentences:
text: Foals from vaccinated mares should receive their first vaccination at 6 months of age, followed by boosters at 4 to 6-week intervals, e.g., booster vaccinations at 7 and 8 to 9 months of age.