Assertion: smallpox's virus | /r/CapableOf | jump specie
Facets:
value: from an animal
type: OTHER
value: successfully
type: MANNER
Source sentences:
text: When a virus successfully jumps species from an animal to a human (“patient zero”), and that version of the virus in turn succeeds in making the jump to a second human, those two people become the first two human vectors of human-to-human virus transmission.