The 2026 Hantavirus Cruise Ship Outbreak: A Wake-Up Call for Global Public Health Preparedness

Abstract

Hantaviruses are not new. They are a group of viruses carried mainly by rodents and are usually transmitted to humans when infected urine, droppings, or saliva become airborne and are inhaled [1,2]. In the Americas, hantavirus infection can lead to hantavirus pulmonary syndrome, a severe illness characterized by fever, breathlessness, and rapidly progressive respiratory failure, with case fatality rates approaching 30–40% [2]. What makes the current outbreak particularly noteworthy is that it is believed to involve the Andes virus, a strain found in South America that is one of the few hantaviruses known to spread from one person to another through close and prolonged contact [1,3].