Norovirus spreads easily and often causes vomiting, diarrhea, nausea and stomach pain, although people usually recover in a few days. And the virus has many names — stomach flu, stomach bug and cruise ship virus, although you can also get sick on land.

It's the second Holland America Line ship to have dozens of passengers fall ill this month, according to the CDC.

This is the eighth gastrointestinal illness outbreak on cruises to meet the CDC’s threshold for public notification this year.

Eighty-eight people aboard a Holland America cruise ship, the Eurodam, in the Caribbean were sickened in a norovirus outbreak -- the fifth striking the line since early December.