Announcer: Starting right now on ABC's "This week" -- this morning, ebola in America. The two nurses still in treatment. How did they get sick? Who else is at risk? And why were so many mistakes made?... See More
Announcer: Starting right now on ABC's "This week" -- this morning, ebola in America. The two nurses still in treatment. How did they get sick? Who else is at risk? And why were so many mistakes made? The travel ban on ebola countries, is the white house about to reverse course? Plus, new warnings from the ebola hot zone. This morning we're separating the facts from the fears. Countdown to the midterms, 16 days to go. Ebola scares shaking up the race for senate control. Who's ahead now? And a brand-new poll on 2016. The surprising name at the head of the pack. And the Francis effect. The storm brewing over the pope's latest call for change in the church. From ABC news, "This week with George stephanopoulos" begins now. With so much anxiety generated by ebola, we're going to address the scare from all angles this morning, reports from Africa, Dallas, Washington and Dr. Richard Besser here in New York to help everyone understand what we should be worrying about overseas and why we shouldn't panic here at home. We begin in Dallas, the only American city where ebola has been contracted. ABC's Tom llamas is there. Tom. Reporter: Residents woke up to find a mea culpa letter in their local papers. It comes from the CEO of Texas health presbyterian where he acknowledges the hospital did make mistakes. The mea culpa letter comes as a lab technician who handled ebola victim Thomas Eric Duncan's blood sample returned to Texas on this cruise liner this morning. Earlier that technician who has been quarantined in her cabin had her own blood sample transferred at sea to conduct tests for ebola before the ship docked. Watch as a U.S. Coast guard helicopter hovers over the deck of the carnival "Magic." The chopper was circling the ship. It never landed. It dropped off supplies for the blood sample. It came back about 30 minutes later and got the sample and was successful. Reporter: The air and sea pickup and delivery comes after both Mexico and Belize refused to let that lab technician disembark in their countries. Experts say she was always very low risk. In his weekly address, the president took on the ebola scares. This is a serious disease but we can't give in to hysteria or fear because that only makes it harder to get people the accurate information they need. Reporter: In Ohio though health officials aren't taking any chances. They're now requiring more than 100 people to self-monitor themselves, this after nurse amber Vinson flew to Cleveland for wedding planning just days before being diagnosed with ebola. Anyone who could possibly have come in contact are going to be contacted and judged on the basis of the risk that they may pose. Reporter: Meanwhile, the first 48 people who came into contact with Thomas Eric Duncan will be cleared for monitoring tonight including his fiancee. So far none are showing symptoms. And from the hospital where he died in addition to that mea culpa letter, officials have also begun releasing videos like this one. Trying to win the reputation back. ABC news has con fired that cruise ship passenger tested federal government for ebola. As for the hospital, doctors and hospital officials acknowledge some patients have canceled appointments in concern over the ebola scare here. George. Okay, Tom, thanks very much. We're joined now by the administrator in charge of Dallas county, judge clay Jenkins. Thanks for joining us. We heard Tom say those 48 friends and family of Mr. Duncan expected to hit the deadline tonight. No symptoms yet. So do you expect to lift the quarantine? Well, there's not a quarantine but they'll be free to go. It's a protective order and it will expire for them at midnight tonight and then it's going to be a good thing for those families who have been through so much and we're very happy about that but at the same time we're extremely concerned about these health care workers and we continue to make contingency in the event that there are more cases. What about that group? It's a group of about I guess 75 people now. You've asked them all to abide by an agreement to stay off public transportation and basically stay out of public. What kind of sanctions are they subject to if they don't? Well, they've signed agreements with the state's public health commissioner and they all have health care licenses and those are binding agreements and they'll follow them because these are hometown health care heroes. These are people who put their lives on the line to take care of Eric Duncan and they want to do what they're asked to do. They just needed the protocols to be put in place for them and those protocols were lacking for them when they travel. Judge, we're all hoping this doesn't happen, but if in any of those health care workers do turn out to be infected by ebola, what's the plan for them? Well, all the intake will be done here at Presby hospital. I've instructed all ambulances to bring them and anyone else who has a west african travel history and a fever to Presby. We'll intake them here and we'll either send them to one of three national health centers via air ambulance or we'll send them by ground ambulance to utmv in galveston where we had the ability to dispose of the waste and there's a copious amount of waste that's created in the care of these cases. We're also setting up a triage unit in another location here in case we have a whole lot of cases so we'll have isolation units to take care of ebola positives somewhere else in the next 24 hours. We'll be announcing that tonight. Judge Jenkins, thanks for your time.
This transcript has been automatically generated and may not be 100% accurate.