More than 500 passengers sickened on Royal Caribbean cruise ship

One of the largest cruise ships in the world is headed back to a Florida port a day early as over 500 people on the ship have been quarantined, likely with Norovirus.

Watch TV shows, movies and more on Yahoo View.

About NBC Nightly News with Lester Holt

Watch "NBC Nightly News with Lester Holt," providing reports and analysis of the day's most newsworthy national and international events. See More

Check out more stuff on Yahoo View