[NEWwoman]

Thought of terrorism came to my mind.

Then again, I know cruise lines hire many people from 3rd world countries at very low wages and long working hours. That is why ships usually stop at a foreign port, so they are under international not domestic labor laws.

Maybe some employees are getting even by making the passengers sick? Or maybe there are cells aboard?

[JustPiper]

Bump on the hirings, exactly. I've believed this since the third ship, hundreds of passengers.

[Caipirabob]

Holland American's service staff is hired specifically from Indonesia and Malaysia, countries with predominantly Muslim populations. It only takes one.

[MoralSense]

This most resembles the original Legionnaire's Disease outbreaks.

[ErnBatavia]

Giving people the "Squirts" isn't much in the way of terrorism IMO....besides, this sort of thing has gone on for years with cruise liners.