When an older relative starts sniffing, coughing or feeling under the weather in winter, it's natural to wonder what it is. Is it a simple cold that will pass in a few days, flu, or Covid? The symptoms overlap, and in older people they don't always follow the usual pattern.
In practice, the most important thing isn't getting the label exactly right. It's knowing when to keep a close eye at home and when to get help. This guide explains the main differences, the warning signs to take seriously, and how to look after a loved one in Oxford through the winter.
The quick guide to a Cold, the Flu or Covid
A cold
- comes on gradually over a day or two
- mainly affects the nose and throat: sneezing, a blocked or runny nose, sore throat
- usually mild, and most people can carry on with daily life
- tends to clear up within about a week
Flu
- comes on suddenly, often within a few hours
- affects the whole body: high temperature, aching body, exhaustion, dry cough, headache
- often leaves people too tired to carry on as normal
- can lead to serious complications in older people, such as pneumonia
Covid
- symptoms can include a high temperature, a new continuous cough, a loss or change in sense of smell or taste, shortness of breath, tiredness, aches, headache and a sore throat
- can be mild or more serious, and may develop over several days
- older people and those with weakened immune systems are at higher risk of becoming seriously unwell
Because these symptoms overlap so much, it can be impossible to tell them apart by symptoms alone.
Why older people may not show typical symptoms
As we age, the immune system responds differently to infection. An older person with flu or Covid may not have a high temperature, and the first signs can be subtler:
- unusual tiredness or sleepiness
- loss of appetite or not drinking
- new confusion or seeming "not themselves"
- unsteadiness or a fall
- being more breathless than usual
If you notice a sudden change like this in winter, take it seriously, even without classic symptoms.
When to get help
The NHS advises that adults aged 65 and over with flu symptoms should ask for an urgent GP appointment or contact NHS 111. You should also seek advice if:
- symptoms are getting worse or haven't improved after a week
- your relative has a long-term condition such as heart or lung disease, diabetes or a weakened immune system
- they are not eating or drinking
- they seem confused, or more confused than usual
Call 999 if they have sudden chest pain, severe difficulty breathing, are coughing up blood, or are very confused or hard to wake.
Some people at higher risk from flu or Covid may be offered antiviral treatment, which works best when started early, so don't wait to get advice.
Caring for an older relative at home
Whatever the cause, the basics are the same:
- Rest in a warm room, ideally heated to at least 18°C.
- Fluids: small, frequent drinks to prevent dehydration.
- Food: light, easy meals little and often.
- Pain relief: paracetamol can help with aches and temperature, but check with a pharmacist that it's suitable alongside other medicines.
- Hygiene: handwashing and tissues help protect others in the household.
- Monitoring: keep an eye on breathing, alertness and how much they are drinking.
Prevention this winter
Vaccination remains the best protection. The free NHS flu jab is available to everyone aged 65 and over, and the autumn Covid booster is offered to adults aged 75 and over, care home residents and people who are severely immunosuppressed. Both programmes opened on 1 October 2026 and can be booked through the GP, local pharmacies, the NHS App or by calling 119.
How live-in care helps
When an older person becomes unwell, early action makes a real difference. With live-in care, a dedicated carer who knows your relative well is there every day to notice the first signs of illness, contact the GP or 111 promptly, and help them rest, eat, drink and take medication while they recover.
For families who don't live nearby, it means not having to rely on a phone call to know how a parent is really feeling. For those who need less support, visiting care can provide regular check-ins and help through the winter.
FAQs about winter illness in older people
How can I tell if it's flu or a cold?
Flu tends to come on suddenly and affect the whole body, with a high temperature, aches and exhaustion. A cold comes on gradually and mainly affects the nose and throat. In older people, the difference isn't always clear, so seek advice if you're worried.
What are the symptoms of Covid in older people?
Symptoms can include a high temperature, a new continuous cough, a change in sense of smell or taste, breathlessness and tiredness. Older people may also show new confusion, loss of appetite or unsteadiness.
When should an older person see a doctor for flu?
The NHS advises that adults aged 65 and over with flu symptoms should ask for an urgent GP appointment or contact NHS 111. Call 999 for chest pain or severe breathing difficulty.
Can older people have flu without a fever?
Yes. Some older people don't develop a high temperature, so changes in alertness, appetite or mobility are important signs to watch for.
Talk to our Oxford team
If you'd like to talk about how we could support your relative at home this winter, our Oxford care team is here to help, with friendly, no-pressure advice.