Investigation Update on the Zaandam

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Cruise Line: Holland America Line

Cruise Ship: Zaandam

Voyage Dates: 11/26-12/11

Number of ill passengers out of total number of passengers: 64 of 1431 (4.47%)

Number of ill crew out of total number of crew: 4 of 617 (0.67%)

Predominant symptoms: diarrhea and vomiting

Actions: Holland America Line and the crew aboard the ship took the following actions to respond to the outbreak:

increased cleaning and disinfection procedures,
sent daily updates to CDC until the number of ill people returned to expected levels.

The number of ill people returned to expected levels for the voyage ending on 12/21/06.