My husband and 4 others went on a Viking seven day Cruise from Amsterdam to Basil, Switzerland on November 24, 2012. We got on board on a Sunday. The ship was the Helvetia.

No sooner had Monday morning come; one member of our party became ill along with other passengers. An older woman, who had become ill, was taken off the ship as early as that Tuesday at a port never to be seen again.

From that point on passengers left and right were getting sick. I would hear angry, disgruntled passengers milling around the beverage bar describing their terrible symptoms. One dentist traveling with his wife commented to me that he'd never been ill like that in his life. Read more