[Hantavirus] Is it a risk in Hong Kong? Symptoms, transmission and prevention explained!
Health2026-06-15
5 Mins Read
Recent reports of a hantavirus (Hantavirus) cluster on a cruise ship have raised public concern. Unlike common illnesses such as influenza or COVID-19, hantavirus is closely linked to rodent exposure, prompting questions about potential risks in Hong Kong.
Hantavirus is primarily transmitted by rodents, does not usually spread between people, and poses a very low risk in Hong Kong.
Key takeaways
Here are three essential facts to know:
1. Infection is associated with exposure to contaminated environments
2. Infection is associated with exposure to contaminated environments
3. Cases in Hong Kong are extremely rare and the risk is very low
What is Hantavirus?
Hantavirus refers to a group of viruses carried by rodents, particularly rats, which can be transmitted to humans through their excreta.
Infection can lead to two main diseases:
- Haemorrhagic Fever with Renal Syndrome (HFRS), more common in Asia and Europe
- Hantavirus Pulmonary Syndrome (HPS), mainly found in the Americas
Hantavirus is not a new virus, but infections are typically linked to contact with contaminated environments.
How is Hantavirus transmitted?
Hantavirus does not spread through normal social contact or general airborne transmission.
Main routes of infection include:
- Inhalation of contaminated dust: dried rodent droppings can become airborne and inhaled
- Direct contact: exposure through broken skin or mucous membranes
- Rodent bites or scratches (less common)
- Consumption of contaminated food
The risk of infection comes from exposure to rodent-contaminated environments rather than person-to-person contact.
Is there a risk of an outbreak in Hong Kong?
Hong Kong is not considered a high-risk area for hantavirus.
According to local public health data:
- Only a very small number of cases have been recorded over the years
- Most cases are linked to imported infections or occupational exposure
- Strong public hygiene and pest control measures are in place
The risk of hantavirus infection for the general public in Hong Kong is extremely low.
Who is at higher risk?
Certain groups may face higher exposure risks, including:
- Construction, cleaning and demolition workers
- Warehouse staff and pest control workers
- Farmers and forestry workers
- Individuals frequently exposed to rural or old building environments
The risk is mainly related to environmental exposure rather than everyday activities.
Symptoms and incubation period
Early symptoms of hantavirus infection may resemble common flu, but can worsen rapidly.
The incubation period typically ranges from 1 to 8 weeks.
Common symptoms include:
Early stage:
- Fever
- Headache
- Muscle pain (particularly in the lower back and thighs)
- Nausea and vomiting
Later stage (depending on the type):
Haemorrhagic Fever with Renal Syndrome (HFRS):
- Low blood pressure
- Kidney dysfunction
- Bleeding symptoms
Hantavirus Pulmonary Syndrome (HPS):
- Cough
- Shortness of breath
- Fluid accumulation in the lungs
The mortality rate of Hantavirus Pulmonary Syndrome can be as high as around 40%. If symptoms such as breathing difficulty, abnormal urine output or bleeding occur, medical attention should be sought immediately.
How can you prevent Hantavirus?
Prevention focuses on avoiding contact with rodents and their excreta. Personal protection measures include:
- Wash hands thoroughly with soap for at least 20 seconds
- Avoid touching the face after contact with potentially contaminated surfaces
- Wear a mask when cleaning dusty or unused spaces
Home and environmental hygiene:
- Store food and waste properly
- Keep living spaces clean and clutter-free
- Seek professional pest control if signs of rodent activity are found
Maintaining good environmental hygiene is the most effective way to prevent hantavirus infection.
Travel and outdoor precautions
When travelling to rural or forested areas in Europe or Asia:
- Avoid staying in poorly maintained accommodation
- Ensure tents are intact and sealed when camping
- Avoid contact with wild rodents
Outdoor and rural activities may increase the likelihood of exposure to contaminated environments.
A protection perspective: managing health risks
Although hantavirus poses a very low risk in Hong Kong, it highlights an important point: some health risks are environment-related and cannot always be predicted.
Potential medical risks include:
- Hospitalisation or even intensive care in severe cases
- Possible complications involving the lungs or kidneys
For travel or activities involving higher exposure risk, it is important to review:
- Whether medical coverage includes infectious diseases
- Whether emergency medical assistance or evacuation is covered
Prevention reduces risk, while proper protection helps manage unexpected medical needs.
Frequently asked questions (Q&As)
1. Does hantavirus spread from person to person?
2. Should people in Hong Kong be concerned?
3. Does wearing a mask help?
4. Is hand sanitiser effective?
5. When is the risk higher?
Conclusion
Key points to remember:
1. Hantavirus is transmitted by rodents, not usually between humans
2. The risk in Hong Kong is extremely low
3. Good hygiene significantly reduces the likelihood of infection
Rather than worrying about rare diseases, maintaining proper hygiene practices and being aware of environmental risks are practical steps towards protecting your health.
1. Centre for Health Protection (Hong Kong) Hantavirus Infection. Available at: https://www.chp.gov.hk/en/healthtopics/content/24/3057.html
2. Department of Health (Hong Kong) Current Travel Health News. Available at: https://www.travelhealth.gov.hk/english/outbreaknews/2026/ond05May2026.html
3. World Health Organization (WHO) Hantavirus. Available at: https://www.who.int/health-topics/hantavirus
4. Centers for Disease Control and Prevention (CDC) Hantavirus Overview. Available at: https://www.cdc.gov/hantavirus/index.html
Information and materials provided is general in nature and does not constitute medical or health advice from AXA Hong Kong and is on an “as is” and “as-available” basis without representation and/or warranty of any kind, either express or implied. While AXA Hong Kong has taken reasonable care in providing such information and materials, they are not specific to your investment objective, financial situation, health or medical conditions or particular needs. No warranty or responsibility is assumed by AXA Hong Kong and our related or holding companies regarding non-infringement, security, accuracy, completeness, adequacy, reasonableness, fitness for a purpose or free from computer viruses in connection with the information and materials provided. AXA Hong Kong and our related companies and holding companies do not accept any liability for any loss, damage, cost or other expense, whether wholly or partially, directly or indirectly, arising from any error, inaccuracy or omission of the information and materials to the extent that such liability is not excluded by law.
You may also be interested in
AXA VHIS Series
Illness and injury may strike without warning. It is simply not worth the risk of missing the prime time for treatment due to financial hardship. Under the Voluntary Health Insurance Scheme (“VHIS”), AXA offers you comprehensive and flexible protection.
Follow AXA
