The mornings are getting colder, the evenings are drawing in, and the big coats are finally making their way out of the wardrobe. Autumn has arrived, and so has the time of year when coughs, colds and flu start appearing more often.
While it’s tempting to put every sniffle down to the changing weather, flu is worth taking seriously. It can leave you feeling extremely unwell, and for some people it can lead to more serious complications.
So, before winter gets into full swing, here’s what to know about flu season and how to prepare.
Is flu really that different from a cold?
Yes. Although the symptoms can overlap, flu often comes on much more suddenly than a common cold.
You might feel reasonably well in the morning and find yourself completely wiped out by the evening. A high temperature, aching muscles, a headache and overwhelming tiredness are all common signs. Some people also develop a dry cough or a sore throat.
A cold tends to develop more gradually and usually affects the nose and throat more than the rest of the body. Flu can leave you feeling too unwell to carry on with your usual activities. (NHS guidance)
It’s also worth remembering that not every winter virus is flu. COVID-19 and other respiratory infections can cause similar symptoms, so you can’t always tell which virus you have based on how you feel alone.
The annual flu vaccine helps protect eligible people against serious illness during the winter season.
Who should be thinking about the flu vaccine?
The flu vaccine is offered every year because the viruses circulating can change. Having the jab last year doesn’t mean you’re covered for this season.
For autumn 2026 in England, the NHS programme is being rolled out in stages. Children in eligible age groups and pregnant women can receive their vaccination from September. Most eligible adults can get theirs from 1 October.
The free NHS vaccine is available to people at higher risk of becoming seriously unwell from flu. This includes adults aged 65 and over, pregnant women and people with certain long-term health conditions. Eligible children are also included in the programme. (UKHSA guidance for autumn 2026)
If you’re unsure whether you qualify, check with your GP surgery or pharmacist.
The vaccine does not guarantee that you won’t catch flu, but it helps reduce your risk of serious illness. It is updated each year to target the strains expected to circulate.
Why does flu spread so easily in autumn and winter?
As the weather cools, people tend to spend more time indoors. Homes, classrooms, offices and public transport can become places where respiratory viruses spread more easily.
Children can also bring infections home from school, which means one person’s sniffle can quickly become a household problem.
You can’t avoid every germ, and you don’t need to spend the season worrying about every cough. However, washing your hands regularly, covering your mouth when coughing or sneezing, and staying home when you’re too unwell to manage your usual activities can help reduce the spread of infection.
If you develop a fever and feel unwell, give yourself time to rest rather than pushing through work or social plans. Your colleagues probably won’t thank you for sharing the office bug.
Flu can cause a sudden fever and significant tiredness. Rest and fluids can help while you recover.
What if you catch flu?
Most people recover at home, although it can take several days before they feel well enough to return to normal activities. Tiredness and a cough can sometimes linger after the worst symptoms have passed.
Rest, drinking enough fluids and using suitable medicines to relieve symptoms can help while you recover. Always follow the instructions on medicines, particularly if you’re taking other medication or have an existing health condition.
Antibiotics do not treat flu itself because it is caused by a virus. In some cases, a doctor may prescribe antiviral treatment, particularly for people at higher risk of complications.
Seek medical advice if your symptoms are getting worse or you’re concerned about how unwell you feel. If you are pregnant or have a condition that puts you at higher risk, contact a healthcare professional promptly if you develop flu symptoms.
Get urgent medical help if you experience severe difficulty breathing, sudden chest pain or become seriously unwell. Call 999 for a life-threatening emergency.
Don’t forget about the rest of your health
Flu might get most of the attention during the colder months, but autumn is also a sensible time to check whether you’ve been putting off any health concerns.
Perhaps you’ve had a cough that isn’t clearing up, unusual tiredness that doesn’t improve with rest, or a symptom you’ve been meaning to ask about. Don’t automatically blame it on the season.
Most everyday illnesses don’t need emergency care, but persistent or unexplained symptoms deserve attention. Contact your GP or another appropriate healthcare service for advice rather than waiting for the problem to disappear on its own.
It’s much easier to deal with a concern when you know what you’re dealing with.
If flu symptoms are worsening or you’re at higher risk of complications, seek medical advice promptly.
A little preparation goes a long way
There’s no need to panic about flu season. Just be aware that infections become more common at this time of year, know whether you’re eligible for vaccination, and take symptoms seriously if they develop.
If you’re eligible for the NHS flu vaccine, arrange it when you’re invited or check with your local provider about booking. If you become unwell, rest and avoid passing the infection on where possible.
Autumn can still be a lovely time of year. You don’t have to spend it waiting for the next winter bug to arrive. A bit of preparation now can help you feel more confident about looking after yourself and knowing when to seek medical advice.