The increased number of people travelling by ship and
the increases in itineraries may expose travellers to infectious
diseases, such as gastrointestinal and respiratory infections.
Cruise ship passengers and crews are also at risk
for new patterns of old diseases or newly recognized causes
of diseases [4]. During a cruise, passengers and crew from
many countries intermingle for long periods in semienclosed
compartments. Activities on board such as dining
and entertainment increase the possibility of contact
between passengers and crew