Last week, approximately 140 passengers and staff aboard Royal Caribbean’s Voyager of the Seas cruise ship became ill with what is likely norovirus. The ship, which can hold several thousand passengers, had arrived in Australia from New Zealand. Long lines and delays in boarding new passengers developed as a result of the cleaning procedures that took place to help prevent further spread of the illness. Cruise officials stated that they were cleaning guest rooms per CDC recommendations. Passengers uncomfortable with travelling following the outbreak were offered replacement cruises at later dates. Those struck with the illness apparently responded well to medical treatment offered aboard ship. This outbreak highlights the ease with which norovirus spreads in close quarters, either person to person, or through contaminated food, water, objects, or surfaces.