Health officials are confirming that a Chicago woman sickened with the coronavirus has transmitted the illness to her husband. This is the first person-to-person case of the virus in the U.S. It is also the sixth confirmed case in the country and the second in Illinois. The woman was diagnosed with the coronavirus after traveling to Wuhan, China to care for her sick father and returning to Chicago earlier this month. The couple is hospitalized in isolation in northwest suburban Hoffman Estates. The World Health Organization declared the coronavirus outbreak an international public health emergency. The respiratory illness has killed over 200 people in China.