March 7 Seven Seas Mariner Regent Seven Seas Cruises The ship reported that 3 of 446 (0.67%) crew and 36 of 614 (5.86%) passengers had reported ill on a 12 day cruise from Lima (Peru) to Fort Lauderdale (25 Feb - 9 Mar). Symptons were consistent with gastrointestinal illness (e.g., norovirus) Illness
This is the info I read at events at sea. Those percentages don't seem like a large amount to me, but then I'm not the CDC.