Norovirus

It's the most norovirus outbreaks over the first six months of a year since 2012. The reports come from ships under Carnival and Royal Caribbean brands, according to the CDC.

The CDC says about 48 million people a year in the country are sickened by foodborne illness.

Royal Caribbean's Oasis of the Seas is returning to a Florida port a day early and giving passengers full refunds of their fare after 277 guests and...

Cruise ships account for only 1 percent of reported norovirus cases, while 25 percent come from contaminated food. Sick workers at restaurants and cafeterias often spread the virus.