tonight, the new and concerning turn involving the coronavirus here in the u.s. tonight, the california patient testing positive with no apparent ties to china or anyone who traveled there. they are now trying to retrace this invisible line of transmission. where did she get it here in the u.s.? dozens of medical staff being asked to self-quarantine. and why did it take days for the woman to be tested for coronavirus? and reports tonight the white house has told health officials to stop speaking unless it goes through vice president mike pence. and we ask dr. jen ashton tonight, who is being tested for coronavirus here in the u.s.? also breaking, the other toll tonight, the economy. the dow plunging nearly 1,200 points today alone. the largest single day point drop ever. the companies and the warnings tonight of zero profit growth this year, and we are live on wall street.