Is hantavirus the new coronavirus? Four key facts about the virus

Danish health correspondent and TV doctor Peter Qvortrup Geisling has addressed growing concerns about hantavirus, clarifying that the risk in Denmark remains low. The discussion follows reports of a deadly outbreak linked to a Dutch cruise ship, according to a report by DR.

What is hantavirus?

Between 10,000 and 100,000 people are infected with hantavirus annually worldwide, according to the World Health Organization (WHO). The virus exists in multiple strains, each associated with different rodent species such as the red vole or field mouse.

Geisling explains that the most dangerous variants are found in South America, while those in Europe and Asia are far less severe. “To my knowledge, no Dane has ever died from hantavirus,” he states. The strain identified on the Dutch cruise ship MV Hondius—where a couple died—was the Andes virus, native to South America. Hantavirus has been documented as a disease for over 70 years, with the specific virus type identified in the 1980s.

What is the risk of infection?

The risk of contracting hantavirus in Denmark is minimal, with around 10 cases diagnosed annually, some likely acquired abroad. “Most people’s immune systems can fight off the virus without issue,” Geisling says.

Transmission typically occurs through inhalation of rodent urine, saliva, or feces particles. The infected couple on the cruise ship may have been exposed while birdwatching in South America, where rodents are common. “Human-to-human transmission is rare and usually requires extremely close contact, like direct exposure to respiratory droplets,” Geisling notes. The Andes variant is the only strain confirmed to spread between people, but current evidence suggests limited transmission.

Should you be concerned if infected?

Geisling reassures that European hantavirus strains are generally mild, with most cases resolving without severe complications. Symptoms—such as fever, headache, lower back pain, nausea, and vomiting—typically appear 1–6 weeks post-infection. “In Denmark, these symptoms are far more likely to stem from coronavirus, influenza, or a common cold,” he says.

However, severe cases of the South American strain can pose greater risks to older adults, those with chronic illnesses, or immunocompromised individuals.

Will hantavirus trigger another lockdown?

Unlike coronavirus, hantavirus does not spread easily, making a pandemic unlikely. Authorities are monitoring and isolating individuals linked to the cruise ship outbreak, but Geisling dismisses fears of nationwide restrictions. “This virus simply doesn’t transmit well enough to cause a pandemic,” he concludes, acknowledging lingering public anxiety from the COVID-19 era.

Tags: hantavirus, public health, infectious diseases