The World Health Organization and public health experts say hantavirus does not pose a pandemic risk and is not comparable to COVID-19.
This assessment arrives as health officials monitor localized outbreaks in South America and a specific incident on an international cruise ship. While the virus carries a high mortality rate, its method of transmission prevents the rapid, widespread human-to-human spread seen with SARS-CoV-2.
"No es el próximo COVID" (It is not the next COVID), a WHO spokesperson said [1]. The organization emphasized that the public should remain calm while focusing on early detection to save lives.
Unlike COVID-19, hantavirus is primarily transmitted through contact with the urine or droppings of infected rodents [5]. Because it lacks high human-to-human transmissibility, epidemiologists argue it cannot trigger a global crisis. Dr. Gaspar Domínguez, a Chilean epidemiologist, said the virus "no tiene potencial pandémico" (has no pandemic potential) [2].
Despite the lack of pandemic risk, the virus remains dangerous to individuals. In Argentina, 23 cases were registered from mid-June 2024 [4], resulting in nine deaths [4]. The lethality rate for hantavirus in Argentina is estimated between 30% and 40% [6].
Other localized incidents include cases in Chile and a specific outbreak on an international cruise ship involving five confirmed cases [1]. These clusters highlight the importance of environmental safety, and rapid medical intervention.
Dr. Juan Pérez, a specialist in zoonotic diseases, said it is fundamental to detect cases early to reduce mortality [3]. Some experts have cautioned that a lack of continued research could leave gaps in the understanding of the virus's behavior [3]. However, the consensus among global health bodies remains that the current threat is limited to specific geographic and environmental exposures.
“"No es el próximo COVID"”
The distinction between a high-fatality pathogen and a pandemic pathogen is critical. While hantavirus is significantly more lethal than many respiratory viruses, its reliance on zoonotic transmission—jumping from rodents to humans—acts as a natural barrier to the exponential growth required for a pandemic. The focus for health authorities remains on rural sanitation and early clinical diagnosis rather than global lockdowns.
