As norovirus outbreaks surge on cruises, here’s how the CDC says passengers should protect themselves.

Here’s what the CDC advises.

Of the 13 outbreak, 10 were norovirus.

Cruise ships docked at a port, view from the water

Cruise ship from different lines while anchored in Mexico.Credit:Alessandra Amodio/Travel + Leisure

Some 150 passengers crew members fell ill with norovirus during themost recent reported outbreakaboard Holland America Line’sEurodam.

In years when there is a new strain of the virus, there can be increased norovirus illness.

Norovirus outbreaks occur throughout the year but are most common from November to April.

Reporting gastrointestinal illness is important.

This allows steps to be taken to limit the spread of illness, the CDC website states.

Outbreaks are tracked by the CDC’s Vessel Sanitation Program (VSP).