Assertion: flu | /r/Causes | mild
Facets:
value: to severe illness
type: OTHER
Source sentences:
text: It can cause mild to severe illness, and at times can lead to death.
text: Influenza can cause mild to severe illness, and it may predispose to exacerbations of underlying disease or development of secondary bacterial infections.
text: It can cause mild to severe illness, and at times can lead to death.
text: The U.S. Centers for Disease Control and Prevention (CDC) notes that influenza can cause mild to severe illness, usually caused by two main types of influenza virus – type A and type B.