FAQs about Hemorrhagic Fever with Renal Syndrome (HFRS)

Question 1

1. What are the warning signs of severe HFRS?

Accepted Answer

Severe HFRS may cause low blood pressure, shock, severe bleeding, reduced urine output, kidney failure, fluid overload, and confusion. In severe cases, the disease may cause acute kidney injury, impaired blood clotting, and circulatory collapse, making immediate hospitalization essential. Prompt recognition and supportive treatment are essential to reduce the risk of life-threatening complications and improve survival.

Question 2

2. Who is at the highest risk of getting HFRS?

Accepted Answer

People who frequently come into contact with rodents or their urine, droppings, saliva, or nesting materials are at the highest risk of HFRS. This includes farmers, forestry workers, military personnel, construction workers, pest-control workers, campers, and people cleaning rodent-infested buildings. Living in or traveling to regions where hantaviruses are common also increases the likelihood of infection.

Question 3

4. How is HFRS diagnosed?

Accepted Answer

Doctors diagnose HFRS by reviewing symptoms, possible rodent exposure, travel history, and physical examination findings. Blood tests are used to detect hantavirus antibodies or viral genetic material. Additional laboratory tests evaluate kidney function, platelet count, bleeding abnormalities, and electrolyte levels. Urine tests and imaging studies may also help assess kidney damage and disease severity.

Question 4

5. Can HFRS be cured?

Accepted Answer

There is currently no specific cure or antiviral treatment that reliably eliminates HFRS. Management focuses on supportive hospital care, including careful fluid replacement, blood pressure control, dialysis when needed, and treatment of complications. Early diagnosis and prompt medical care significantly improve recovery and reduce the risk of severe kidney damage, shock, and death.

Question 5

3. How long is the incubation period for HFRS?

Accepted Answer

The incubation period for HFRS is usually 1 to 2 weeks after exposure to an infected rodent, although it can range from 1 to 6 weeks depending on the hantavirus strain and individual factors. During this time, infected people have no symptoms. Once symptoms begin, the illness can progress rapidly, making early medical evaluation important after potential exposure.

Question 6

6. How can I prevent HFRS?

Accepted Answer

Prevent HFRS by minimizing contact with rodents and their contaminated urine, droppings, and nesting materials. Seal holes in homes, store food securely, dispose of waste properly, and control rodent populations. Clean contaminated areas using disinfectants instead of sweeping or vacuuming, and wear gloves and a mask when cleaning heavily infested spaces. These measures greatly reduce infection risk.

Question 7

7. Is HFRS contagious from person to person?

Accepted Answer

In most cases, HFRS is not contagious from person to person. Infection usually occurs after inhaling virus-containing particles from the urine, droppings, or saliva of infected rodents. Human-to-human transmission has not been documented for the hantaviruses that typically cause HFRS, making rodent exposure the primary source of infection.

Question 8

8. When should I seek emergency medical care for HFRS?

Accepted Answer

Seek emergency medical care immediately if you develop high fever, severe abdominal or back pain, persistent vomiting, low blood pressure, unusual bleeding, reduced urine output, swelling, or difficulty breathing after possible rodent exposure. These symptoms may indicate severe HFRS with kidney involvement or shock. Early hospitalization and supportive treatment greatly improve survival and reduce serious complications.

Question 9

9. What is the recovery process after HFRS?

Accepted Answer

Recovery from HFRS depends on disease severity and how quickly treatment begins. Many patients gradually regain kidney function over several weeks or months, although fatigue may persist during recovery. Follow-up appointments are important to monitor kidney health, blood pressure, and overall recovery. Most people who receive timely supportive care recover without permanent kidney damage.

Question 10

10. What is the survival rate for people with HFRS?

Accepted Answer

The survival rate for HFRS depends on the virus causing the infection and access to prompt medical care. Mortality ranges from less than 1% for milder strains to 5–15% or higher for severe strains such as Hantaan virus. Early diagnosis, hospitalization, and supportive treatment significantly improve survival and reduce the risk of fatal complications.