The coronavirus outbreak that has killed scores and sickened thousands is set to deliver a significant blow to China's already-weakening economy. Quarantines and travel bans put into place to limit the spread of the illness already have disrupted one of the country's busiest travel and spending periods of the year, the Lunar New Year holiday, which began Jan. 25. The lockdowns have created major supply chain disruptions in Hubei province, the key Chinese transit hub and major manufacturing center for automobiles, fiber optic cable and machinery where the outbreak started. Public transportation, including trains, planes and ferries in and out Hubei -- whose provincial capital, Wuhan, was the epicenter of the outbreak -- have been suspended, with the freedom of movement curtailed for some 60 million people. The disruptions are not limited to the province, however, as business and industrial activities across the nation, already substantially slowed or even suspended...