Assertion: smallpox | /r/HasProperty | spread by contact
Facets:
value: with an infected person
type: OTHER
Source sentences:
text: It is spread by person-to-person contact, with an incubation period of 10 to 14 days.
text: Smallpox is transmitted from person to person by infected aerosols and air droplets spread in face-to-face contact with an infected person.