Assertion: smallpox's virus | /r/Causes | the disease
Facets:
Source sentences:
text: There are two different species of viruses that can cause the disease.
text: The virus causes a disease that can inflict disfiguring scars, blindness and death.
text: There are two different species of viruses that can cause the disease.
text: Petersen also noted that even though smallpox has been eradicated, the virus that causes the disease has not been completely wiped off the planet.
text: To multiply and cause disease, viruses need the help of a living cell.