Health officials in the United States are monitoring several travelers who recently returned from the MV Hondius cruise ship after a hantavirus outbreak linked to the vessel resulted in multiple deaths and illnesses.

According to reports, at least six American passengers aboard the Dutch-operated expedition cruise ship have returned to their home states, including Georgia, Texas, Arizona, Virginia, and California. Authorities are closely monitoring the situation amid concerns that the virus could continue to spread internationally.

The outbreak aboard the ship has already claimed three lives and infected at least seven other individuals. Passengers who left the vessel during a stop on the remote island of Saint Helena in the South Atlantic were reportedly unaware they may have been exposed to the virus.

Hantavirus is traditionally associated with contact with infected rodents or their droppings. However, officials are investigating whether this outbreak involves person-to-person transmission, which is increasing concern among health experts.

Texas health authorities confirmed that two residents who had been on the cruise are voluntarily checking their temperatures daily as a precaution, though neither has developed symptoms so far.

In Georgia, public health officials stated that the two returning travelers remain healthy and are following guidance issued by the Centers for Disease Control and Prevention (CDC).

Arizona health officials also reported that the traveler who returned to the state is not currently experiencing symptoms linked to the infection.

Meanwhile, Virginia’s Department of Health said the resident there remains in good condition and continues to be monitored.

California health officials emphasized that the overall public health risk remains low at this time.

Medical experts note that hantavirus can remain dormant for several weeks, with symptoms sometimes appearing as late as eight weeks after exposure.

Oceanwide Expeditions, the company operating the MV Hondius, confirmed that around 30 passengers left the ship during its April 24 stop at Saint Helena, including six Americans who may have unknowingly been exposed to potential pathogens back home.