The World Health Organization says hantavirus has been confirmed in the death of one of three cruise ship passengers and suspected in the other 3 “urgent medical” cases. The polar cruise ship is being held off the coast of Cape Verde as health authorities are trying to coordinate the medical evacuation of two crew members who require urgent care, while another passenger is fighting for his life in the hospital. If these cases are confirmed to have spread from human to human, medical experts say this could change the future of travel medicine.