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Viral Pneumonia
Urgent
Viral pneumonia is an infection and inflammation of the lungs caused by a virus. It can produce cough, fever, fatigue, shortness of breath, chest discomfort, and reduced oxygen levels in more serious cases. Different respiratory viruses can cause pneumonia, and symptoms may overlap with bacterial pneumonia or other respiratory conditions. Most mild cases improve with supportive care, while older adults, young children, and people with certain underlying conditions may develop more serious illness.
Body System
Respiratory System
When to Seek Medical Attention
Viral pneumonia requires medical assessment when symptoms are significant or worsening because respiratory function can deteriorate. Seek prompt care for persistent fever, worsening cough, dehydration, chest pain, or increasing shortness of breath. Emergency assessment is needed for severe breathing difficulty, bluish lips or skin, confusion, fainting, severe chest pain, or rapidly worsening oxygen levels.
Symptoms
3
Causes
1
Treatments
5
Diet
3
Overview
Viral pneumonia is an infection and inflammation of the lungs caused by a virus. It can produce cough, fever, fatigue, shortness of breath, chest discomfort, and reduced oxygen levels in more serious cases. Different respiratory viruses can cause pneumonia, and symptoms may overlap with bacterial pneumonia or other respiratory conditions. Most mild cases improve with supportive care, while older adults, young children, and people with certain underlying conditions may develop more serious illness.
Symptoms 3
Chest Pain
Dry Cough
Fever
Causes 1
Viral pneumonia can be caused by several respiratory viruses, including influenza viruses, respiratory syncytial virus, adenoviruses, coronaviruses, and others. The virus infects respiratory tissues and triggers inflammation that interferes with normal gas exchange. Some viruses can cause pneumonia directly, while others may predispose the lungs to additional infection. The specific virus involved varies according to age, season, location, circulating strains, and individual exposure.
Infection
Risk Factors
Risk of viral pneumonia is influenced by age, immune status, underlying heart or lung disease, and exposure to respiratory viruses. Young children, older adults, pregnant people, and individuals with weakened immunity may have increased risk of severe disease from some viruses. Smoking and other factors that impair respiratory defenses can also increase vulnerability. Risk varies considerably according to the specific virus and the health of the individual.
Diagnosis
Diagnosis is based on a patient's medical history,
symptoms, physical examination and, when necessary,
laboratory or imaging investigations.
Diagnosis is based on symptoms, physical examination, and assessment of breathing and oxygenation. Depending on severity and clinical circumstances, chest imaging may be used to identify lung inflammation or pneumonia. Tests such as molecular assays or other respiratory testing may identify a causative virus when confirmation is clinically useful. Blood tests and additional investigations may be performed in more serious cases or when bacterial pneumonia, complications, or another diagnosis needs to be considered.
Prevention
Key Prevention Tips
Prevention depends on the virus involved and includes measures that reduce respiratory infection transmission
Vaccination against preventable respiratory viruses, when recommended, can reduce the risk of severe infection
Hand hygiene, good indoor ventilation, covering coughs and sneezes, and avoiding close contact with people who are acutely ill can reduce exposure
People with respiratory symptoms should follow appropriate infection-control guidance, particularly around individuals at higher risk of severe illness
Prevention Guidance
Prevention depends on the virus involved and includes measures that reduce respiratory infection transmission. Vaccination against preventable respiratory viruses, when recommended, can reduce the risk of severe infection. Hand hygiene, good indoor ventilation, covering coughs and sneezes, and avoiding close contact with people who are acutely ill can reduce exposure. People with respiratory symptoms should follow appropriate infection-control guidance, particularly around individuals at higher risk of severe illness.
Reminder: Prevention recommendations should be tailored to your personal health status and risk factors.
Treatment & Management 5
Detailed treatment guidance is currently being prepared.
Detailed treatment guidance is currently being prepared.
Detailed treatment guidance is currently being prepared.
Detailed treatment guidance is currently being prepared.
Detailed treatment guidance is currently being prepared.
Medical Note: The treatment information provided is intended for educational purposes only.
Always consult a qualified healthcare professional before starting,
stopping, or changing any treatment.
Diet & Nutrition 3
Recommended Foods
Protein Rich Foods
Support recovery and immunity.
Fresh Fruits
Provide vitamins and antioxidants.
Warm Soups
Help maintain hydration.
Foods to Avoid
Alcohol
May worsen dehydration.
Processed Foods
Low nutritional value.
Medical Nutrition Note: Diet recommendations are intended for general educational purposes and should be tailored to individual health needs by a qualified healthcare professional.
Frequently Asked Questions 5
It is a lung infection caused by viruses.
Fever, cough and shortness of breath are common.
Older adults and people with weak immunity are at higher risk.
Chest imaging and laboratory tests help diagnosis.
Vaccination and hygiene measures reduce risk.
Helpful Tip: These answers provide general medical information.
Consult your healthcare provider for advice tailored to your condition.