Assertion: lassa fever's symptom | /r/CapableOf | go undiagnosed
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Signs and symptoms of Lassa fever typically occur between one and three weeks after the patient is exposed to the virus and for the majority (approximately 80 percent), symptoms are mild and go undiagnosed.
text: The remaining 80% experience much milder symptoms such as fever and weakness, which can often go undiagnosed.