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Symptoms

Cold and flu: telling them apart and knowing when to call

Colds and flu are both caused by viruses, and most people get through them at home. Flu tends to hit harder and faster, and for some people it is worth speaking to a doctor early.

Doctors you can book for cold and flu

Doctors are independent. A listing is not a recommendation. Before you book, you can check a doctor's licence in the health authority's public register. See all doctors.

Questions people ask

How can I tell if I have a cold or flu?

Flu comes on quickly, within a few hours, and leaves you too exhausted to carry on as normal. A cold builds up gradually and mainly affects your nose and throat.

Do antibiotics help with a cold or flu?

No. Both are caused by viruses and antibiotics only work on bacteria, so they will not relieve your symptoms or speed up recovery.

How long am I contagious?

With a cold, you are infectious until your symptoms have gone, usually 1 to 2 weeks. With flu, you are most likely to pass it on in the first 5 days.

When should I see a doctor for flu?

Speak to a doctor if you are 65 or over, pregnant, have a long-term condition or weak immunity, feel very unwell or short of breath, or are not improving after 7 days.

Does the flu vaccine stop colds?

No. The flu vaccine helps protect against flu, but it does not prevent colds.

Sources and further reading

medicAI is not for emergencies. If someone is seriously ill or injured, call 998 or go to the nearest hospital.

This page is general information. It does not replace advice from a doctor who knows your situation. medicAI is a technology platform. Care is given by independent licensed facilities, who are responsible for it and for its outcome.

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