Assertion: lassa fever's symptom | /r/HasProperty | gradual
Facets:
value: usually
type: DEGREE
Source sentences:
text: Signs and Symptoms to look out for: onset of the disease is gradual, infected persons might not show symptoms until about 1-3 weeks after infection.
text: The signs and symptoms of Lassa Fever is usually gradual.
text: Signs and Symptoms to look out for: onset of the disease is gradual, infected persons might not show symptoms until about 1-3 weeks after infection.