How long should hantavirus cruise ship passengers self-isolate?

“But as you can imagine, that’s quite a burden on people and it’s challenging to stay in one place for that period of time, especially as the risk diminishes over time,” Henry said, adding that the four passengers, none of whom were showing symptoms of infection Monday, are reasonable people who understand the risks. “I have no concerns that people are going to run off and go to a party or something.”