Assertion: q fever's symptom | /r/CapableOf | develop within 2-3 weeks of exposure
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The acute symptoms usually develop within 2-3 weeks of exposure, although as many as half of infected people are asymptomatic.
text: Acute symptoms usually develop within 2-3 weeks of exposure, although 50% of infected persons may be asymptomatic.