How Clean is Your Cruise Ship?

When the Celebrity Mercury set sail from Charleston, South Carolina, on March 21 it was probably the cleanest ship at sea. That's because after three sailings in February and March saw about 1,000 passengers come down with the notorious -- and nasty -- norovirus, the Center for Disease Control ordered the Mercury be taken out of service for a four-day thorough decontamination to disinfect it from top to bottom.