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May 6, 2026
PMC Redaktion
Hantavirus during spring cleaning: What to know about transmission, symptoms, and reducing the risk of infection
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Spring cleaning is seen as a harmless fresh start into spring. But cleaning basements, sheds, or attics can pose health risks that many people underestimate — including hantaviruses.
As the days get longer, many people feel the urge to declutter basements, sheds, garages, or attics. But exactly in those places that haven’t been cleaned for a long time, a health risk may lurk: hantaviruses. In Central Europe, they are mainly transmitted through the excretions of infected rodents and can enter the body when dust is stirred up.
The problem: Spring cleaning initially seems harmless. But those who clean dry, dirty surfaces, move old boxes, or sweep in poorly ventilated rooms can unknowingly inhale infectious particles. In certain regions of Germany, the risk is higher than in others, which is why it's not just a theoretical issue.
Hantaviruses are not spread from person to person like a classic cold. Infection usually occurs indirectly through mice or other rodents, whose urine, droppings, or saliva can contaminate the environment. Particularly risky is inhaling dust that contains these particles.
Typical situations include cleaning tasks in rooms that have been unused for a long time. Also, rearranging firewood, sweeping garden houses, or opening old storage rooms can be problematic if rodents have been active there. This is precisely why spring cleaning is considered a classic scenario for preventable infections.
Eine Hantavirus infection often begins nonspecifically. Common initial symptoms are fever, headache and body aches, severe fatigue, and sometimes abdominal or back pain. The clinical picture can therefore easily be mistaken for a flu-like infection.
Depending on the virus type, kidney involvement may occur later. Then, among other things, circulatory problems, abdominal pain, or changes in urination are possible. Anyone who develops symptoms after cleaning in dusty, potentially contaminated areas should have it medically clarified whether a hantavirus infection is possible.
Special attention is advisable when working in basements, sheds, attics, garages, vacation homes, or garden sheds. Rooms that have not been used for a long time can also be affected if mice or other rodents have been active there.
The regional distribution is also important. In Germany, hantavirus diseases do not occur evenly, but are clustered regionally. Anyone living or cleaning in a known risk area should consistently implement protective measures.
The most important rule is: Do not stir up dust dry. Rooms should be well ventilated before cleaning. Instead of sweeping dry or vacuuming vigorously, wet wiping is the safer method.
Additionally, gloves and suitable respiratory protection help with dusty work. Suspicious areas with rodent droppings or nests should not be cleaned carelessly. In cases of heavy infestation, it is often better to seek professional help rather than work with unsuitable means.
Anyone who develops fever, severe fatigue, headache, or limb pain after spring cleaning should consider hantavirus, especially if dusty rooms were previously cleaned. This is all the more true if the symptoms appear several days to weeks after the contact.
Early medical clarification is advisable because hantavirus diseases can rarely be severe. The sooner the connection is recognized, the more targeted the diagnostics can be.
Spring cleaning is a good opportunity for organization, but also for caution. Anyone cleaning a cellar, shed, or attic should think of possible rodent contamination and avoid stirring up dust dry. Simple protective measures can significantly reduce the risk.
