marches continue for a third day in missouri, where demonstrators are protesting racial bias. in the week ahead . the controversy over colombus day. how the traditional holiday is being rethought. thanks for being with us. with a second ebola case being confirmed in texas, authorities are trying to work out what went wrong, and how a health care worker got the virus herself. we are evaluating other potential health care worker exposures because if this individual was exposed, as they were, it is possible others were. c.d.c. wants answers and past. the president called for more to be done to guarantee that hospitals mow what to do. in dallas police reported to the apartment complex. authorities are notifying neighbours. we begin coverage in texas. she joins us. what is the condition of the patient. the health kar worker is in stable condition, showing mild symptoms of ebola. the worst is ahead. she is being treated in the same hospital where she was the caregiver, c