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Breathlessness, fatigue and reduced exercise tolerance are among the symptoms reported by people with long COVID.
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News18•25-09-2026, 08:47
Post-Pandemic Lung Health: When to Worry About Lingering Respiratory Symptoms
  • •Lingering coughs after infection don't always mean active infection or lung damage; airways can remain inflamed or sensitive.
  • •Many respiratory infections affect the upper tract, but some can cause bronchitis or pneumonia, with severity depending on the organism, age, and immune response.
  • •Antibiotics are not always needed for a cough; treatment decisions should be based on clinical evidence of bacterial infection, not just cough severity.
  • •Long COVID can cause persistent breathlessness, fatigue, and reduced exercise tolerance, with some patients experiencing changes in lung function or pulmonary fibrosis.
  • •Persistent symptoms like breathlessness, declining exercise capacity, or specific warning signs like chest pain or fever warrant medical evaluation, especially for vulnerable groups.

Key Questions Answered

No, a lingering cough does not necessarily indicate active infection or lung damage. Respiratory infections can leave the airways inflamed or unusually sensitive long after the illness has cleared.

You should see a doctor if a cough lasts longer than three weeks, worsens, or is accompanied by shortness of breath, chest pain, fever, blood in the sputum, or falling oxygen levels. Pre-existing lung patients, older adults, and immunosuppressed individuals should seek care even sooner.

Airway inflammation and irritation can persist long after the infective process is contained, leading to increased mucus secretion and temporary hyperreactivity of the air passages. This can sometimes trigger bronchial hyperreactivity or worsen conditions like asthma.