Two dozen more Americans infected with coronavirus

Two charter flights carrying more than 300 passengers evacuated from the Diamond Princess cruise ship in Japan arrive at military bases in Northern California and San Antonio, Texas.
3:14 | 02/18/20

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Transcript for Two dozen more Americans infected with coronavirus
But we begin with the coronavirus evacuations, more than 300 Americans taken from quarantine onboard that cruise ship in Japan, on buses, then put on planes. But it was learned along the way some tested positive for the virus. The passengers initially considered healthy to fly. U.S. Officials then getting that alarming report while on the way to the airport. They decided to keep going. 14 of those Americans testing positive for the virus, confined to special containment areas during their charter flights back to the U.S. Two planes touching down in California and Texas, all passengers now under new quarantine right here at home. In fact, some have now been transferred to Omaha. ABC's Clayton Sandell leading us off tonight. Reporter: Tonight, more than a dozen Americans back on U.S. Soil, now believed to be infected with novel Cree that virus, landing in Omaha, Nebraska, today. Escorted from the plane one-by-one by medical teams, rushed off by motorcade to this special isolation unit. They've had a very long journey and we've not going to make any assumptions about anything that's passed along so we're going to go ahead and just test everybody. Reporter: 338 Americans were evacuated from the diamond princess cruise ship in Japan, flown to bases in Texas and California, arriving overnight. 14 are suspected of having a coronavirus infection. Four now in isolation and hospitalized near Travis air force base near Sacramento. Ten in Omaha. The bus will take you to the airplane, airplane takes you to the United States. Reporter: Hundreds of passengers checked before leaving the ship were deemed healthy to fly. But after the evacuation had already begun, a complication. New test results revealed those 14 people were positive for the cry us have, exposing others on a 40-minute bus ride to the airport. Officials making a critical decision, saying the safest option was to push forward with the evacuation, putting infected patients in the back of the planes in these special isolation chambers. They took temperatures, if you had a high temperature, you went into that isolation booth. Reporter: Mark had to leave his wife behind in a Japanese hospital after she tested positive for the virus. So far, 454 cruise passengers have been infected. We met John and Melanie Haering when John got sick on with fevers on the ship and had to be hospitalized. Is he now has pneumonia. They made the tough decision for Melanie to catch that flight home. She's now back in the U.S., telling us she, too, now has a fever. All right, so, let's get to collate on the Sandell, live from Omaha tonight. And Clayton, the rest of the roughly 300 passengers, the Americans who showed no sign of the virus, we know they spent time on those buses with these passengers, the Americans, the 14 who its believed might be infected with coronavirus. Of course more testing here at home, but I gather the rest of the passengers in close contact will be watched closely now for the days to come? Reporter: They will be watched very closely, David. They'll be in quarantine for two weeks and it's important to note that those 14 others who tested positive in Japan will be tested again here in the states and while that happens, they will be kept in quarantine, in isolation, away from everyone else. David? Clayton Sandell, leading us off tonight. The latest headlines on the Cree that virus. Clayton, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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