The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to inform clinicians and health departments about a new cluster of hantavirus disease cases caused by infection with Andes virus. Hantavirus disease can cause severe illness and can be fatal. Clinicians should be aware of the potential for imported cases, although the risk of broad spread to the United States is considered extremely unlikely at this time. As a precaution, this health advisory summarizes CDC’s recommendations for U.S. public health departments, clinical laboratories, and healthcare workers about hantavirus disease case identification, testing, and biosafety considerations in clinical laboratories.

Advisory: 2026 Multi-country Hantavirus Cluster Linked to Cruise Ship | HAN | CDC