Is it the coronavirus that's infected Wall Street, or are there bigger economic concerns at play?

KNXAM: On-Demand
Thursday, February 27th
It's not just the fears of a spreading coronavirus outbreak that's bringing anxiety to traders and investors on Wall Street:  the pandemic ground lots of production lines to a halt in China, bringing massive supply chain disruptions to all kinds of American businesses.  And consumers across Asia stopped spending over the last few months, holed up in self imposed quarantine.  The economic fallout from coronavirus is real.

But is that the only thing at work with the sinking stock market, which is down almost 1,200 points today?