What should you know about influenza is a viral disease?

Influenza is a viral disease of the respiratory tract, meaning antibiotics do not treat the virus itself and care focuses on symptoms and risk. Some people need prompt clinical advice because viral illness can lead to breathing problems or a secondary complication.

Influenza viruses infect cells lining the airways and can trigger inflammation throughout the body. This helps explain sudden feverishness, chills, headache, cough, muscle aches, and fatigue. The illness can spread through respiratory particles and contaminated hands or surfaces. An antibiotic may be prescribed only when a clinician identifies a bacterial infection alongside or after influenza; it does not remove the influenza virus.

Rest and take fluids regularly. Follow label directions or professional advice for fever and pain medicines, and check before combining cold remedies. Stay away from close contact while feeling acutely unwell, ventilate shared spaces, cover coughs, and wash hands. People who are pregnant, older, immunocompromised, or living with chronic disease should seek advice early because treatment choices may be time-sensitive.

Seek urgent help for severe trouble breathing, chest pain, fainting, new confusion, blue or grey lips, inability to drink, or severe weakness. Arrange a medical review when symptoms keep worsening, do not begin to settle, or improve before returning with a worse cough or breathing difficulty. These changes can be associated with pneumonia or another complication.

Ask whether your illness is consistent with influenza, whether antiviral treatment or testing is suitable, how to use symptom medicines safely, and what signs would mean you need urgent care.