Assertion: bird flu | /r/HasProperty | infectious disease
Facets:
Source sentences:
text: Bird flu, also known as avian flu or avian influenza, is an infectious disease caused by any of the influenza type
text: Bird flu, or avian influenza, is an infectious disease of birds caused by type A strains of the influenza virus.
text: Bird flu, or avian flu, is an infectious type of influenza that spreads among birds.