Hantavirus: symptoms, spread and prevention in Pakistan
Understand rodent-related exposure, recognise warning symptoms and learn how to clean safely at home.
Hantaviruses can cause serious illness affecting the lungs or kidneys. Prevention starts with reducing contact with infected rodents and their waste.
Updated 5 October 2026 · Lahore, Pakistan
Medically reviewed and approved by
Dr G Sarwar Chaudhry
Consultant Respiratory & Sleep Physician · 5 October 2026
What should people in Pakistan know?
Finding rats or mice does not establish that they carry hantavirus, and an outbreak overseas does not establish an outbreak in Pakistan. This guide does not provide a Pakistan case count or claim a current local outbreak. Check dated notices from Pakistan’s National Institutes of Health and WHO Disease Outbreak News for public-health updates.
For households, shops, farms and storage areas, practical priorities are safe rodent control and prompt assessment of illness after exposure. A doctor should consider other explanations for fever—including dengue, leptospirosis and respiratory infections—rather than assuming hantavirus.
Hantavirus pulmonary syndrome
HPS, also called hantavirus cardiopulmonary syndrome, is mainly associated with viruses in the Americas. Fluid leakage into the lungs can cause rapidly worsening breathlessness and circulatory failure.
Haemorrhagic fever with renal syndrome
HFRS is mainly associated with Europe and Asia. Severity varies: kidney injury, low blood pressure and bleeding can occur. Seoul virus has a worldwide distribution.
How does hantavirus spread?
The main exposure is to infected rodent urine, droppings or saliva. Disturbing contaminated material can release infectious particles into the air, which may be inhaled. Exposure can also occur through contaminated hands, food, broken skin or, less commonly, bites.
Can it spread from person to person?
Most hantaviruses are not known to pass between people. Andes virus is an important exception: transmission has been documented through close contact. Follow public-health advice if you have been identified as a contact of a confirmed case. WHO overview ↗
Symptoms and timing
Symptoms may appear weeks after exposure. HPS commonly begins within 1–8 weeks; HFRS often starts within 1–2 weeks, although later onset is possible.
Early illness
- Fever, chills and marked tiredness
- Muscle aches and headache
- Nausea, vomiting or abdominal pain
These symptoms overlap with many other infections.
Signs of deterioration
- New cough, breathlessness or chest tightness
- Dizziness, fainting or confusion
- Reduced urine, swelling or unusual bleeding
Seek urgent assessment if these develop.
Tell your clinician when and where exposure occurred—even if it was several weeks earlier. CDC symptom guide ↗
How to clean rodent droppings safely
For a small household contamination, follow these precautions. Heavy infestation, contaminated ventilation ducts or extensive nesting requires professional advice and additional protection.
- Ventilate first. Open doors and windows for 30 minutes and leave the area while it airs.
- Wear rubber or plastic gloves. Avoid touching your face.
- Wet thoroughly. Use a suitable household disinfectant, following its label. Allow the stated contact time; CDC advises five minutes or the product’s instructions.
- Wipe up carefully. Use paper towels, dispose of waste in a covered bin, then disinfect hard surfaces.
- Wash up. Wash gloved hands before removing gloves, then wash bare hands with soap and water.
Do not dry-sweep, vacuum or pressure-spray contaminated waste. Never mix bleach with acids, toilet cleaners, ammonia or other cleaning products. A mask alone does not make unsafe cleaning safe.
For dead rodents, nests and different materials, follow the full CDC cleaning instructions .
Reduce the chance of another infestation
Remove food and shelter
Use secure containers for food and animal feed. Clean spills, manage rubbish in covered bins and reduce clutter around storage areas.
Block entry and control rodents
Seal gaps around doors, pipes and walls. Use appropriate traps safely, keeping them away from children and pets. Seek professional help for persistent infestation.
Diagnosis and treatment
Assessment combines symptoms, exposure and travel history with examination and blood tests. A clinician may check blood counts, kidney function, oxygen levels and chest imaging. Confirmation uses specialist antibody testing and sometimes PCR; testing arrangements depend on laboratory and public-health pathways.
There is no simple home treatment for serious hantavirus disease. Hospital care may include oxygen, carefully controlled fluids, blood-pressure support, ventilation or dialysis. Treatment should begin on clinical suspicion when illness is severe.
Do antivirals help?
Ribavirin has not shown benefit for HPS. It may be considered early in selected HFRS cases under specialist care. Do not self-medicate with antivirals or antibiotics. Antibiotics do not treat the virus, but clinicians may prescribe them while investigating other serious infections.
Frequently asked questions
Does every rat or mouse carry hantavirus?
No. Infection depends on the rodent species and location. You cannot identify infection by appearance, so avoid direct contact and clean waste safely.
Can hantavirus affect both the lungs and kidneys?
Yes. HPS mainly affects the lungs and circulation, while HFRS mainly affects the kidneys and blood vessels. These patterns can overlap.
Is there a hantavirus vaccine?
There is no broadly available vaccine covering all hantaviruses. Some HFRS vaccines have been used in China and South Korea. They do not provide a general solution for all forms of hantavirus disease; exposure prevention remains essential. Published vaccine context ↗
How long does recovery take?
Recovery varies with the virus and severity. After HFRS, recovery can take weeks to months. People with significant kidney or lung involvement need follow-up tailored to their illness.
Should I book a clinic visit if I am breathless after rodent exposure?
New breathlessness with fever after possible exposure warrants urgent hospital assessment. Do not delay emergency care while waiting for a clinic booking.
Sources and further reading
- WHO: Hantavirus fact sheet
- CDC: About hantavirus
- CDC: How to clean up after rodents
- CDC: Hantavirus prevention
- CDC: Hantavirus pulmonary syndrome
- CDC: Haemorrhagic fever with renal syndrome
- ECDC: Orthohantavirus infections
General patient information; individual diagnosis and treatment require clinical assessment.