Hantavirus Treatment: What Doctors Can and Cannot Do

Is There a Cure for Hantavirus?

Currently, we don't have a cure for hantavirus. Humans contract hantavirus from rodents. This virus is present in the urine or poop of the infected rodents. As a result, touching or coming into contact with such infected substances can transmit hantavirus. Unlike other RNA viruses, hantavirus currently has no treatment. Due to factors such as rapid disease spread, diagnostic challenges, and the unique nature of the virus, there are currently no treatment options for hantavirus. However, heart and lung complications caused by this disease are treated via supportive care.

Why Is Hantavirus So Difficult to Treat?

No hantavirus cure is available for the following reasons:

• One of the most interesting features of the hantavirus is that it lowers our bodies' defenses. The N protein in the virus interacts with a defensive protein in our body, forming a new protein complex. This helps the virus escape our body's defense mechanisms.

• The virus spreads rapidly in our bodies. As a result, the initial symptoms are very mild, such as flu-like fever, cough, and cold. However, within a day, you experience severe complications. By this time, the virus has spread rapidly within our bodies. This gives a little window for diagnosis. Also, before diagnosis, the viral replication takes its peak.

• During this viral infection, the disease severity increases with viral replication. This is why the spread of this disease is linked to your immune system. As a result, when the actual diagnosis occurs, it becomes difficult for doctors to suppress the virus, suppress immunity, or both.

• In an infection, immune cells kill the viral or bacterial cells. However, Hantavirus infects endothelial cells, which activate immune cells. But these cells do not kill. As a result, we can see more tissue damage due to a stronger immune response. Because of this improper immune response, hantavirus treatment is difficult.

What Is Hantavirus Treatment by Disease Stage?

As the hantavirus attacks and damages our blood vessels, it activates our immune system. This causes several types of damage to our bodies.

Hantavirus Pulmonary Syndrome (HCPS): Lung and heart damage due to the hantavirus infection is the most common complication. This happens due to damage to the blood membrane. Also, immune chemicals damage the lining of the air sacs. This leads to fluid accumulation in the lungs. In addition, damaged blood vessels form minor clots. These clots can hamper your blood flow and cause heart damage. Hantavirus HPS treatment stages are,

1. Prodromal Stage: This is the early stage where the patient experiences fever, cough, and chills. Immediate hospitalization and medical care in the ICU are needed with judicious fluid management.

2. Cardiopulmonary Stage: This is the second phase, during which you may observe breathing difficulties. ECMO therapy is given at this stage. Also, doctors use medicines to maintain blood pressure. Vandetanib is an effective medicine during this period that can help prevent tissue damage.

3. Convalescent Stage (Recovery): This is the recovery stage where doctors focus on maintaining fluid, electrolyte, and nutritional balance.

Hemorrhagic Fever Renal Syndrome (HFRS): This is a serious condition. Here, damaged tissues cause fluid to collect in your body and your kidneys. Also, tissue damage leads to internal bleeding. Gradually, this causes loss of kidney function and kidney failure.

1. Early Stages (Febrile Phase): This marks the onset of kidney injury. Intravenous Ribavirin is given in this phase to control infection. Also, Favipiravir and Lactoferrin can be used in this stage as antiviral medicine. However, the role of these medicines is debatable.

2. Late Stages (Oliguric/Polyuric Phases): In this phase, kidney injury is more severe. Intensive support, along with dialysis, is done in this phase.

What Can Doctors Do?

As there is no treatment for hantavirus infection, doctors mainly provide supportive care.

This supportive care includes;

1. Respiratory support is needed to clear out fluid from the lungs. Mechanical ventilation is needed in cases of severe lung damage to maintain oxygen supply to the body.

2. Intensive care unit (ICU) support and monitoring are needed to prevent heart damage.

3. Fluid management and dialysis help your kidneys function.

4. Hantavirus cannot be treated with any antiviral drug. However, in the initial stages, Ribavirin is very effective in stopping infection and preventing kidney damage.

What Is the Role of Ribavirin for Hantavirus?

The role of Ribavirin in hantavirus is very limited. Current studies have shown that it can only be effective in the early phase of the infection. Especially if the patient has developed HFRS, it can be given at an early stage. However, it is ineffective in cases of lung or heart damage. Also, it is not a proven medicine for hantavirus infection.

What Can Doctors Not Do in Hantavirus Infection? Treatment Limitations

As hantavirus infection is new, there is no established treatment protocol.

As a result, doctors cannot provide the following things during hantavirus infection:

1. Doctors can not guarantee recovery from hantavirus infection.

2. A doctor cannot choose a particular medication for this, as no current medicine or vaccine is available.

3. Doctors cannot predict the spread of infection in this case. As the spread of infection and disease severity increase dramatically over time.

What Is Post-Treatment Recovery and Long-Term Care for Hantavirus?

The recovery from Hantavirus infection is a long-term process. Hantavirus recovery after treatment usually takes up to 3 to 6 months.

The recovery process is as follows;

1. Adequate rest, along with proper diet, nutrition, and fluid supply.

2. Breathing exercises are effective in regaining lung function.

3. Physical exercises can be beneficial in regaining muscle strength.

4. Patients often experience fatigue, weakness, and hair loss after treatment. Along with this anxiety, insomnia, and memory loss can happen. That is why post-recovery psychological counseling is very effective.

When to Go to the Emergency Room for Hantavirus Symptoms?

If our area is seeing any Hantavirus outbreak, you should be cautious. You must know the window for Hantavirus diagnosis is very small, which is why the following symptoms must not be neglected:

1. Fever, with cough and cold.

2. Flashing of the skin.

3. Breathing issues, chest pain, and heaviness in the chest.

4. Muscle pain, muscle cramps, and redness of the eye.

Conclusion:

Hantavirus infection rapidly spreads throughout the body. That is why the diagnostic window for hantavirus is very small. Doctors have relied on symptoms to start the treatment for hantavirus. As there is no definitive treatment for hantavirus, supportive care is the mainstay of treatment for this infection. For any query related to Hantavirus treatment, you can contact a general medicine specialist.

Key Takeaways:

1. There is no definitive treatment for Hantavirus.

2. The main treatment for Hantavirus is based on supportive care for lung, heart, and kidney complications.

3. Antiviral medicines like Ribavirin are minimum effectiveness in preventing viral growth.

4. It takes almost 3 to 6 months for recovery after treatment.