The individual is married to the Chicago woman who got sick from the virus after she returned from a trip to Wuhan, China, the epicenter of the outbreak. There have been cases reported of the infectious virus spreading to others in a household or workplace in China and elsewhere.

from Times of India https://timesofindia.indiatimes.com/world/us/us-reports-1st-case-of-person-to-person-spread-of-coronavirus/articleshow/73779975.cms