Rebecca Fraser is one of them, but her husband tested negative.

So I have to go alone to the hospital.

I can handle one passenger describing the ship as a floating prison author, Gay Quarter and her husband, Philip, are reaching a breaking point.

We need to get out of here, and we've been very cheerful.

But frankly, I have to tell you now we're becoming quite afraid off Hong Kong.

A second ship with 3600 passengers is also quarantined. 00:00:55.400 --> 00:01:1.100 The virus has killed more than 600 there are over 31,000 confirmed cases in China. 00:01:1.220 --> 00:01:4.850 But experts fear the numbers could be four higher here in the U. 00:01:4.850 --> 00:01:5.080 S. 00:01:5.090 --> 00:01:13.650 A scare in Bayonne, New Jersey, after the CDC boarded a Royal Caribbean ship to screen 27 passengers who recently traveled from China.

A family of four hospitalized, one of them testing positive for the flu.

The ship has now been clear.

Just incredible.

Job Idiot has joined us from New Jersey tonight.

NGO.

We're still waiting for those Corona virus test results, but I know the cruise line is now taking action.

That's right, David Royal Caribbean, telling us that it is now banning all passengers who have a Chinese Hong Kong or Macau passport, regardless of when they were last there.

And now Norwegian Cruise Line tells us it is doing the same day.

Nobody knows.

Thank you.

Hi, everyone.

George Stephanopoulos here.

Thanks for checking on ABC News YouTube channel.

If you'd like to get more video show highlights and watch live event coverage, click on the right over here to subscribe to our channel. 00:01:58.120 --> 00:02:1.270 And don't forget to download the ABC News after breaking news alerts.