A leading Dutch epidemiologist said Thursday that the current hantavirus outbreak is "extremely unlikely" to become a pandemic [1].

This assessment arrives as international health authorities monitor a cruise-ship outbreak that has triggered alerts across multiple nations. The expert's perspective aims to temper public alarm by distinguishing the transmission patterns of hantavirus from those of previous global health crises.

The outbreak has resulted in three deaths [4] and has placed 12 countries on alert [4]. The situation is linked to a cruise-ship incident where more than 140 passengers and crew were expected to disembark in the Canary Islands [5].

While some reports indicate that the Andes virus linked to this outbreak is among the deadliest hantavirus strains, the Dutch expert said that lethality does not equal pandemic potential. The specialist said the virus is far less transmissible than COVID-19 [2].

Because the strain is not as contagious between humans, the expert said the risk of a wide-scale global event remains low [1]. This limitation in transmission is the primary reason why the outbreak is not expected to mirror the trajectory of the COVID-19 pandemic [3].

Health officials continue to track the movements of those exposed on the vessel to prevent further localized clusters. The focus remains on containment and monitoring, rather than the large-scale mitigation strategies used during previous respiratory pandemics.

“"extremely unlikely" to become a pandemic”

The distinction between virulence—how deadly a virus is—and transmissibility—how easily it spreads—is central to this assessment. While the hantavirus may have a high fatality rate, its inability to spread efficiently from person to person prevents it from achieving the exponential growth required for a pandemic. This suggests that while individual cases are severe, the systemic risk to global public health is significantly lower than that of a highly contagious respiratory virus.