Human Pulmonary Virus What is it and how does it affect children and the elderly

Human Metapneumovirus (HMPV) is a respiratory virus that affects the respiratory system. This means it can cause symptoms such as a runny nose, cough, fever, and sometimes difficulty breathing. Human Metapneumovirus (HMPV) tends to affect young children, older adults, and people with weakened immune systems more severely, although it can also cause mild symptoms in otherwise healthy adults.The virus spreads easily through coughing, sneezing, or touching contaminated surfaces. That is why good hygiene and preventive measures—such as frequent handwashing and avoiding close contact with infected individuals—are very important in reducing the risk of infection.Although there is no specific treatment that directly kills the virus, supportive care can help the body recover more quickly. This may include medications to relieve symptoms, adequate fluid intake, and sufficient rest. In addition, some natural remedies, such as ginger and mint, may help soothe certain respiratory symptoms.In this article on Dalili Medical, we will discuss everything you need to know about HMPV, including its symptoms, transmission methods, the groups most at risk, possible complications, diagnosis, prevention strategies, and available treatments using both medications and natural remedies.

Is HMPV Just a Common Cold?

In many cases, the symptoms of Human Metapneumovirus (HMPV) are similar to those of a common cold, such as coughing, sneezing, and a runny nose. However, in some cases, the virus can lead to more serious illnesses, including bronchitis, pneumonia, or worsening of chronic respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD).

How Common Is HMPV?

HMPV is very common worldwide and is considered one of the major causes of acute respiratory infections. Most people become infected with the virus before the age of five. However, reinfection can occur throughout life.

How Long Do the Symptoms Last?

Most cases improve within one to two weeks.
Infants, older adults, or people with weakened immune systems may need a longer recovery period or closer medical monitoring.

Is HMPV Contagious?

Yes, the virus spreads easily from person to person through:

Respiratory droplets from coughing or sneezing
Contaminated surfaces that a person touches and then touches their face

What Is the Incubation Period Before Symptoms Appear?

The incubation period is usually 3 to 6 days after exposure to the virus before noticeable symptoms appear.

Can HMPV Be Confused With Other Illnesses?

Yes. Its symptoms can resemble those of the common cold, influenza, or respiratory syncytial virus (RSV). For this reason, laboratory testing may sometimes be needed to confirm the infection.

Do Infected Children Need Hospitalization?

Most children recover at home with supportive care.
However, infants, immunocompromised children, or those who develop complications may require closer medical monitoring or hospitalization.

Can Healthy Adults Get the Virus?

Yes, healthy adults can also become infected with HMPV. However, symptoms are usually mild and resemble a common cold, typically resolving within a few days.

Can HMPV Infection Be Completely Prevented?

Currently, there is no vaccine available for HMPV. However, the risk of infection can be greatly reduced by:

Washing hands frequently
Ensuring good ventilation in indoor spaces
Avoiding close contact with infected individuals

Should an Infected Person Isolate?

It is recommended to limit contact with others—especially infants and older adults—until symptoms improve and the risk of spreading the virus decreases.

Can HMPV Be Treated With Antibiotics?

No. Antibiotics are not effective against viruses. They are only used if a secondary bacterial infection develops.

Are There Foods or Drinks That Help Recovery?

Yes, certain foods and drinks may support recovery, such as:

Warm chicken or vegetable soup
Natural herbal drinks like ginger and mint
Fruits and vegetables rich in vitamins and minerals to strengthen the immune system

How Long Is the Infection Contagious?

The infection usually lasts 7 to 14 days.
A mild cough or fatigue may persist for a short time after the main symptoms disappear.

Can Someone Get HMPV More Than Once?

Yes, reinfection with HMPV can occur, especially in people with weakened immune systems or during the winter and early spring seasons.

People at Higher Risk of HMPV Infection

1. Infants and Very Young Children

Especially children under two years old, since their immune systems are still developing.
They are more likely to develop complications such as bronchitis or pneumonia.

2. Older Adults

People over the age of 65 have a higher risk due to reduced immune function with aging.
They are more likely to develop serious complications such as pneumonia or breathing difficulties.

3. People With Weakened Immune Systems

This includes:

Cancer patients undergoing chemotherapy
Individuals with immune disorders such as HIV
People taking immunosuppressive medications after organ transplantation

4. People With Chronic Diseases

Such as:

Chronic lung diseases like asthma or COPD
Chronic heart disease
Diabetes or chronic liver disease

5. People Living in Crowded Environments

For example:

Children in daycare centers or schools
Older adults in nursing homes or hospitals
Healthcare workers or people working in crowded environments

6. People Recently Exposed to Other Respiratory Viruses

Recent infections with influenza, RSV, or the common cold may temporarily weaken the immune system and increase the risk of HMPV infection.

How HMPV Spreads

Respiratory Droplets

This is the most common method of transmission. The virus spreads when an infected person coughs or sneezes, releasing tiny droplets that can reach the nose, mouth, or eyes of nearby individuals.

Contaminated Surfaces

The virus can survive on surfaces such as:

Door handles
Toys
Eating utensils

Touching these surfaces and then touching the face may lead to infection.

Direct Contact With Infected People

Handshakes or close contact with an infected person increases the risk of transmission. Children in schools and daycare centers are particularly vulnerable due to frequent close interactions.

Transmission After Partial Recovery

Some individuals may continue to carry the virus for a short period even after symptoms improve, potentially spreading the infection without obvious signs.

Crowded and Enclosed Spaces

Places such as hospitals, nursing homes, public transportation, and classrooms can facilitate the spread of the virus, especially when ventilation is poor.

Seasonal Spread

HMPV tends to be more active during winter and early spring, when people gather indoors and ventilation is often limited.

Causes of HMPV Infection

Person-to-Person Transmission

The virus spreads easily through:

Respiratory droplets from coughing or sneezing
Touching contaminated surfaces and then touching the mouth, nose, or eyes

Weakened Immune System

People with weaker immune systems are more vulnerable, including:

Infants
Older adults
Individuals with chronic illnesses such as asthma, diabetes, heart disease, or lung disease

Direct Exposure to Infected Individuals

Being in crowded environments like schools, daycare centers, hospitals, or public transportation increases the risk of infection.

Seasonal Factors

Winter and early spring increase the chances of infection due to crowding and limited ventilation.

Post-Recovery Transmission

Some individuals may continue to transmit the virus for a short period after symptoms disappear.

Poor Hygiene Practices

Examples include:

Not washing hands after coughing or sneezing
Sharing food or drinks with infected individuals
Not cleaning or disinfecting contaminated surfaces

Previous Respiratory Viral Infections

Recent infections with viruses such as RSV or influenza may temporarily weaken immunity and increase susceptibility to HMPV.

Symptoms of HMPV

1. Cold- and Flu-Like Symptoms

Common symptoms include:

Runny or blocked nose
Frequent sneezing
Sore throat
Dry cough or cough with mucus
Mild fever
Mild headache
General fatigue and tiredness

2. Lower Respiratory Symptoms

In some cases, Human Metapneumovirus (HMPV) can affect the lower respiratory tract and cause more noticeable breathing problems, including:

Shortness of breath or difficulty breathing
Wheezing or a whistling sound while breathing (especially in children or people with asthma)
Bronchiolitis (inflammation of the small airways)
Pneumonia in severe cases
Chest pain or pressure

3. Symptoms in Infants

Infants may show different or more severe symptoms, such as:

Difficulty feeding
Frequent crying due to breathing discomfort
High or fluctuating fever
Pale skin or bluish discoloration around the lips in severe cases

4. Other General Symptoms

Additional symptoms may include:

Loss of appetite
Mild nausea or occasional vomiting
Muscle and joint pain

Risk Factors for HMPV Infection

Several factors can increase the risk of developing infection with HMPV.

Age

Infants and very young children due to their still-developing immune systems
Adults over 65 years old because immune function naturally decreases with age

Weak Immune System

Cancer patients or those undergoing chemotherapy
People living with HIV
Individuals with chronic illnesses such as diabetes or liver disease

Chronic Diseases

Chronic lung diseases such as asthma or chronic obstructive pulmonary disease (COPD)
Chronic heart diseases

Living in Crowded Environments

Schools and daycare centers for children
Hospitals and nursing homes for older adults

Previous Respiratory Viral Infections

Recent infections such as influenza or RSV can temporarily weaken the immune system and increase susceptibility.

Poor Personal Hygiene

Not washing hands regularly
Sharing personal items
Touching the face after touching contaminated surfaces

Seasonal Factors

The infection is more common during winter and early spring, when people spend more time indoors in poorly ventilated environments.

Complications of HMPV

Although many cases are mild, complications can occur, particularly in vulnerable groups.

1. Lower Respiratory Complications

Bronchitis or bronchiolitis:
Common in young children and may cause wheezing and breathing difficulties.

Pneumonia:
More likely in infants, older adults, or people with weakened immune systems and may require medical care.

Exacerbation of chronic diseases:
HMPV may worsen asthma attacks or breathing problems in patients with COPD.

2. Problems in Infants

Difficulty feeding
Weight loss or poor growth in prolonged illness
Recurrent or severe fever

3. Worsening of Chronic Conditions in Adults

Increased risk of pneumonia in elderly individuals or heart patients
Higher likelihood of respiratory or cardiovascular complications

4. Secondary Infections

Some patients may develop secondary bacterial infections, such as ear infections or bacterial pneumonia, which may require antibiotic treatment.

5. Rare but Serious Complications

Respiratory failure in severe cases, particularly in infants or older adults
Hospitalization may be necessary when symptoms become severe or when other infections occur simultaneously.

Diagnosis of HMPV

1. Clinical Evaluation

Doctors usually begin with a clinical assessment by asking about symptoms such as:

Cough
Sneezing
Shortness of breath
Fever
General fatigue

A physical examination may include listening to the lungs with a stethoscope to detect wheezing or abnormal breathing sounds.

2. Laboratory Tests

Nasopharyngeal swab:
A sample of mucus from the nose or throat is collected to detect the virus.

PCR tests:
These are the most accurate tests for confirming the presence of the virus.

Rapid antigen tests:
Sometimes used for faster diagnosis, although they are generally less accurate than PCR.

3. Imaging Tests (in Severe Cases)

Chest X-ray:
Used when doctors suspect complications such as pneumonia or bronchitis.

It may reveal lung inflammation or fluid accumulation associated with the infection.

4. Blood Tests

In some situations, a complete blood count (CBC) may be requested to identify signs of inflammation or secondary infections.

A slight increase in white blood cells may indicate a secondary bacterial infection.

5. Ruling Out Other Viruses

Symptoms of HMPV can resemble other respiratory infections such as:

RSV
Influenza
COVID-19

Therefore, multiple tests may sometimes be performed to rule out other viral infections.

Note:
Early diagnosis is particularly important for infants, older adults, and people with weakened immune systems in order to prevent complications. Mild cases are often diagnosed based on symptoms and clinical examination, but laboratory confirmation—especially through PCR testing—is usually required for an accurate diagnosis.

Prevention of HMPV

1. Personal Hygiene

Wash hands regularly with soap and water for at least 20 seconds, especially after coughing, sneezing, or touching public surfaces.
Use alcohol-based hand sanitizer if soap and water are not available.
Avoid touching the mouth, nose, and eyes with unclean hands.

2. Avoid Close Contact With Infected Individuals

Stay away from people with cold or flu symptoms.
Avoid sharing food or drinks.

3. Wear a Mask When Necessary

Masks may help reduce transmission in crowded or enclosed spaces, especially when interacting with infected individuals.

4. Improve Indoor Ventilation

Opening windows or using ventilation systems helps reduce the concentration of respiratory droplets in the air.

5. Avoid Crowded Places When Sick

Infected children should stay home until symptoms improve.
Older adults and individuals with weakened immunity should limit exposure to crowded environments.

6. Strengthen the Immune System

Get enough sleep and reduce stress.
Maintain a balanced diet rich in fruits and vegetables.
Drink enough water to support respiratory health.

7. Prevent Secondary Infections

Monitor early respiratory symptoms in children and older adults, and consult a doctor if severe fever or breathing difficulties occur.

Treatment of HMPV With Medications

Currently, there is no specific antiviral treatment that directly eliminates the virus. Treatment mainly focuses on relieving symptoms and supporting recovery.

1. Pain Relievers and Fever Reducers

Used to reduce fever, headaches, and body aches.

Examples include paracetamol (acetaminophen) or ibuprofen, as recommended by a doctor.

2. Cough and Respiratory Relief Medications

Cough medicines may sometimes be used if the cough becomes bothersome, although coughing can help clear mucus.

Warm steam inhalation or humidifiers can help ease breathing and soothe throat irritation.

3. Decongestants

Nasal sprays or decongestant medications may help relieve a blocked or runny nose.
However, caution is necessary when using these medications in children.

4. Oxygen and Respiratory Support (Severe Cases)

Infants or older adults with severe breathing difficulties may require oxygen therapy.

Hospital care may be necessary in cases of low oxygen levels or severe respiratory distress.

5. Antibiotics

Antibiotics are not effective against viruses.
They are only used if a secondary bacterial infection develops, such as bacterial pneumonia or ear infections.

6. Supportive Care

Adequate fluids to prevent dehydration
Proper rest to allow the body to fight the infection

Natural Remedies and Herbal Support for HMPV

1. Herbs That Help Relieve Cough and Respiratory Irritation

Ginger: A natural anti-inflammatory that soothes the throat and may reduce coughing.
Mint: Helps open the airways and reduce congestion.
Licorice root: Soothes the throat and may help reduce respiratory inflammation.

2. Herbs That Support the Immune System

Garlic: Contains compounds with antiviral and antibacterial properties.
Turmeric: Contains curcumin, known for its anti-inflammatory and immune-boosting effects.
Green tea: Rich in antioxidants that support immune health.

3. Warm Fluids

Drinking warm fluids such as water, herbal teas, or chicken and vegetable soup can help:

Reduce congestion
Soothe the throat
Make swallowing easier and reduce coughing

4. Steam Inhalation and Humidification

Inhaling steam—sometimes with herbs such as mint or thyme—can help open the airways and loosen mucus.

5. Rest and Quality Sleep

Adequate sleep helps the immune system fight the virus and may shorten the duration of symptoms.

⚠ Important Notes

Herbal remedies may help relieve symptoms but do not cure the virus directly.
Medical advice should be sought before using herbal treatments for infants, older adults, or people with chronic illnesses.
Avoid herbs that may cause allergic reactions or interact with medications