Norovirus outbreak reported aboard Princess Cruise Lines ship, the Emerald Princess

Princess Cruise Lines ship, the _Emerald Princess, _has reported an outbreak of norovirus affecting 200 passengers and crew. Outbreaks of norovirus infection occur with some frequency in the confined quarters of cruise ships. Travellers can reduce the risk of exposure to norovirus by taking all necessary precautions to avoid contaminated food and water. Travellers should be aware that this group of viruses may persist for some time on inanimate objects such as banisters, door knobs and other surfaces touched by ill persons. Good personal hygiene, especially hand washing, helps to reduce the risk of exposure and infection.