India, May 7 -- A hantavirus outbreak aboard the MV Hondius has left passengers from several countries, including the United States caught in a growing crisis. So far, three people have died, at least eight others have fallen ill and health officials are now trying to track passengers who returned home across different parts of the world without knowing they had been exposed..

Before the most recent evacuations, 149 people remained on the ship, including 88 passengers and 61 crew members. Among them were 17 US nationals, according to Newsweek.

But the bigger concern is the passengers who already left. At least 23 people left when the ship stopped at Saint Helena which is a small island in the South Atlantic on April 23 without being tol...