Is it a cold, flu, or COVID this winter?

Cold, Flu, or COVID This Winter? What’s Going Around in 2025–2026

Every winter, the same question comes up: “Is it just a cold, or is it COVID again?” With new flu strains and updated COVID variants spreading across Europe, it can be hard to know what your symptoms really mean. Runny noses, sore throats, and tiredness are common with many winter bugs, but slight differences can help you work out what’s going on in your body.

During the 2025 to 2026 cold and flu season, there has already been an increase in various illnesses affecting the lungs and airways. Many adults are catching more than one infection in the same season, which can make it confusing to know when to rest, when to test, and when to get medical advice.

This guide will help you understand the latest symptom trends seen across Europe. It will explain how to tell the difference between a cold, the flu, and COVID, and share new COVID symptoms reported this season. You will also learn when it’s a good idea to take a test, how to look after yourself at home, and when to book an online consultation with a doctor for personal medical advice.

Which Viruses Are Spreading This Winter in Europe?

As we head into another European winter, the usual seasonal viruses are back in action. The 2025 to 2026 cold and flu season is already quite active, with many adults dealing with sore throats, blocked noses, and tiredness, all of which feel very familiar. The leading causes are still the same: the common cold, the flu, and COVID-19.

A Mix of Winter Bugs

During the colder months, people spend more time indoors. With less fresh air and closer contact, it becomes easier for viruses to spread. This is why so many illnesses show up at the same time, often with similar symptoms. A mild sore throat might be the start of a cold, while body aches and a high temperature could mean the flu or COVID. Since these symptoms overlap, it can be tricky to tell which one you have without taking a test.

Colds

Many different viruses, such as rhinoviruses and seasonal coronaviruses, can cause the common cold. Symptoms are usually mild and include sneezing, a blocked or runny nose, and a tickly cough. Fever is not common, and most people feel better within a week.

Flu

The flu usually appears later in the season, peaking between December and March in most parts of Europe. It tends to come on suddenly, with fever, muscle aches, and tiredness that can keep you in bed for a few days. The yearly flu vaccine is still one of the best ways to protect yourself, especially for older adults and people with ongoing health conditions.

COVID-19

COVID is still spreading, although the way it affects people has changed. The current variants in Europe often cause milder symptoms in the upper airways, such as sore throat, runny nose, or cough. However, some people still experience strong tiredness, a persistent cough, or difficulty breathing. Because symptoms can vary, testing and booster vaccines are still necessary.

Knowing what illnesses are spreading can help you decide when to test, how to care for yourself, and when to speak to a doctor. Most adults can recover at home, but symptoms such as shortness of breath, chest pain, or an unrelenting fever should be checked by a doctor as soon as possible.

Cold vs Flu vs COVID: Symptom Comparison Guide

When your throat feels sore and your nose starts to run, it is easy to wonder, “Is this just a cold, or could it be COVID again?” The truth is, colds, the flu, and COVID-19 can all start in very similar ways. However, the intensity and duration of the symptoms can help you tell them apart.

This quick guide shows the most common symptom patterns to look out for. It is not a replacement for medical advice, but it can help you decide whether to take a test or book an online consultation with a doctor.

Common Cold Symptoms

A cold is usually mild and goes away on its own. You might notice:

• Symptoms that start slowly over a day or two
• A blocked or runny nose (clear mucus at first)
• A mild sore throat or tickly feeling in the throat
• Sneezing and nasal congestion
• A mild cough, sometimes with mucus
• Tiredness, but still able to do most daily activities
• Fever is rare in adults

Colds typically last about a week. Resting and staying hydrated can help you recover faster.

Flu (Influenza) Symptoms

The flu usually hits harder and faster than a cold. Common signs include:

• Sudden illness, often developing within hours
• High fever (usually above 38°C)
• Strong muscles and body aches
• Extreme tiredness or weakness
• Dry cough and sore throat
• Headache and chills
• Sometimes nausea or diarrhoea in adults

Flu symptoms can last one to two weeks, and you might still feel tired even after the fever goes away. It is a good idea to get tested if you are at higher risk or live with someone vulnerable.

COVID-19 Symptoms (Winter 2025–2026)

COVID symptoms have changed slightly with newer variants seen in Europe this season. The most common ones now include:

• Fever or chills (sometimes mild or not present)
• A cough that does not go away
• Sore throat and blocked or runny nose
• Headache and tiredness
• Muscle or joint pain
• Loss or change in sense of smell or taste (less common now, but still possible)
• Shortness of breath or chest tightness in more serious cases
• Sometimes stomach upset or diarrhoea

Unlike a cold, COVID symptoms can vary from mild to severe and may last for different lengths of time. Some people recover in a few days, while others feel tired or keep coughing for weeks.

Symptom	Cold	Flu	COVID-19 (2025-2026)
How it starts	Gradual (1-2 days)	Sudden (within hours)	Gradual or sudden
Fever	Rare	Standard (often high)	Common, sometimes mild
Tiredness	Mild	Severe	Mild to severe
Body aches	Mild	Strong	Common
Cough	Mild, sometimes with mucus	Dry, can be strong	Persistent, often dry
Sore throat	Common	Common	Common
Blocked/runny nose	Very common	Sometimes	Common
Headache	Sometimes	Common	Common
Loss of smell or taste	Rare	Rare	Possible (less common now)
Breathing issues	Rare	Rare	Possible in moderate or severe cases
Upset stomach/diarrhoea	Rare	Sometimes	Sometimes
Typical duration	About 1 week	1–2 weeks	Varies, sometimes longer

New COVID and Flu Trends This Winte

Each winter brings a new mix of viruses across Europe. This season, health experts have noticed a few changes in how COVID-19 is showing up, along with more cases of flu and RSV (Respiratory Syncytial Virus). Many people are also catching more than one infection at the same time, which can make things confusing.

New COVID Symptom Trends in the EU

Compared with earlier years, COVID-19 this season is showing slightly different symptoms. Many people are noticing signs that feel more like a cold. The most common symptoms include:

• A sore or scratchy throat, sometimes the first sign
• A stuffy or runny nose that feels like a cold
• A dry cough that can get worse at night
• Tiredness and body aches, even without a high fever
• Headache and mild dizziness in some adults
• Shortness of breath occurs in fewer cases, often in older or high-risk adults

Loss of smell or taste happens less often now, but it can still appear and is still a helpful sign.

Research shows that many people now get cold-like symptoms such as a runny nose, sore throat, or sinus problems, instead of the classic symptoms seen earlier in the pandemic.

Shorter Incubation and Earlier Symptoms

Recent reports show that current COVID variants may have shorter incubation times. This means symptoms can start within two to three days of catching the virus.

• If you test too soon, you might get a false negative.
• If you feel unwell but test negative on the first day, repeat the test after 24 to 48 hours.
• Pay attention to your symptoms and rest if you need to.

Flu and RSV on the Rise

Flu and RSV cases are increasing in several EU countries, especially in adults over 50. (GOV.UK). Both viruses cause symptoms that can overlap with COVID, such as cough, tiredness, and fever. When more than one virus spreads at once, it becomes harder to tell which illness you have without testing.

Vaccines and Testing

• Seasonal flu vaccines and updated COVID boosters are still recommended for adults, especially older people or those with long-term health problems. (ECDC)
• Rapid tests are easy to find in pharmacies, and lab tests are still an option if you need confirmation for travel, work, or reassurance.
• Vaccination and testing remain the best ways to protect yourself and those around you.

Flu vs COVID in 2025: Key Differences and Next Steps

Both flu and COVID can start the same way, with fever, cough, sore throat, and tiredness. During the first couple of days, it can be hard to tell them apart. This guide will help you notice the key differences, know when to test, and what to do if you feel unwell this season.

How Flu and COVID Usually Differ in 2025

Onset and intensity:

• Flu often starts suddenly. You may feel fine one moment and then suddenly have a high fever, body aches, and tiredness.
• COVID can start suddenly or gradually. It often includes a sore throat, a blocked nose, and a cough that does not go away quickly.
• Fatigue (feeling very tired) is familiar with both, but it tends to last longer with COVID.

European health agencies, such as the ECDC, report that COVID is still spreading across Europe, while flu activity is increasing as winter progresses.

Loss or change of smell or taste:

• This can still happen with COVID, but it is less common than in earlier years. (ECDC)

Breathlessness:

• Severe flu or COVID can both cause breathing problems.
• If you notice worsening shortness of breath, chest pain, or confusion, contact a doctor right away or call emergency services.

Quick Decision Helper (First 72 Hours)

 

Symptoms	What It Might Be	What to Do
Intense fever, fast onset, body aches, and exhaustion	Flu or COVID	Take a COVID test now. If negative, repeat in 48 hours. If you’re in a higher-risk group, consider flu testing or book an online consultation. (CDC)
Sore throat and congestion with mild or changing fever	Cold or COVID	Test for COVID and repeat after 48 hours if the first test is negative.
Breathlessness, chest pain, confusion, or a lasting high fever	Could be serious	Seek urgent medical help. Do not wait to retest.

 

Treatment for Adults

At home:

• Rest and drink plenty of fluids.
• Use paracetamol or ibuprofen if suitable.
• Follow local health advice if you test positive for COVID.

Flu antivirals:

• Some adults at higher risk (for example, those with health conditions or older adults) may benefit from antiviral treatment.
• These medicines work best when started early. Ask a doctor in an online consultation if this is right for you.
• Treatments such as neuraminidase inhibitors and baloxavir are used in the EU, and resistance remains low.

When to get medical help:

• If your symptoms are getting worse,
• If you have chest pain or trouble breathing,
• If your fever stays high despite treatment.

UK and EU surveillance reports show that flu and COVID trends can change quickly during the season, so recheck symptoms if you feel worse.

Flu vs COVID - Quick Comparison

 

Feature	Flu	COVID (2025)
How it starts	Very sudden	Sudden or gradual
Fever	Common and high	Common, can be mild
Body aches	Strong	Common
Cough	Dry, often early	Dry or productive, it can last weeks
Sore throat	Common	Very common
Blocked or runny nose	Sometimes	Common
Loss of smell or taste	Rare	Still possible
Fatigue	Intense but short-lived	May last longer
Breathing issues	Rare	Possible in moderate or severe cases

Home Care for Cold, Flu, and COVID

Most adults with mild cold, flu, or COVID-like illnesses can get better at home using simple steps. The goal is to rest, ease symptoms, and avoid spreading infection to others.

Core Steps for the First Few Days

• Stay hydrated and rest: Drink plenty of water or warm drinks such as tea or soup. Sleep when you can, and avoid alcohol while you are unwell.
• Soothe your throat: Gargling with warm salt water can help calm a sore throat. Mix half a teaspoon of salt in a glass of warm water, gargle for about 15 to 20 seconds, then spit it out. Some studies show this may help ease throat and breathing symptoms.
• Honey for cough: Take one or two teaspoons of honey by itself or stir it into warm water or tea. It can help soothe a cough and throat irritation. Do not give honey to children under one year old.
• Use a humidifier: A clean, cool mist humidifier can make dry rooms more comfortable. It can ease coughing or dryness, but it will not cure the illness.

Over-the-Counter Options (Adults Only)

• Paracetamol (for fever or pain): Adults can take 500 mg to 1,000 mg every 4 to 6 hours, up to 4,000 mg in 24 hours. Always leave at least 4 hours between doses. Check labels on cold or flu medicines to make sure you are not taking extra paracetamol by mistake.
• Ibuprofen (for aches or inflammation): Adults can take 200 to 400 mg every 4 to 6 hours as needed. Avoid if you have stomach, kidney, heart, or pregnancy-related conditions, or if your doctor has told you not to take anti-inflammatory medicines.
• Nasal decongestants: These can help with a blocked nose for a few days. Do not use them for more than a short period, as overuse can make congestion worse. Some products contain pseudoephedrine, which has restrictions and should be avoided by people with heart or blood pressure problems. Ask your pharmacist for advice.
• Cough mixtures: Most cough syrups have limited evidence of benefit. If you choose to use one, follow the instructions carefully and only use it for a short time.

How to Reduce Spread at Home

If you have a temperature or feel unwell:

• Stay at home and rest.
• Try to keep a distance from others.
• Open windows or improve ventilation.
• Wear a mask if you must be near people outside your household.

When to Stop Home Care and Get Help

Seek medical help right away if:

• You have trouble breathing, chest pain, confusion, or notice your lips or face turning pale or blue.
• Your fever stays high or will not go down even with paracetamol or ibuprofen.
• Your symptoms get worse after a few days instead of improving, especially if you are at higher risk (for example, older age or long-term illness).

If any of these happen, arrange a medical review or online consultation as soon as possible.

When to Test and When to See a Doctor

Winter illnesses like colds, flu, and COVID can seem almost the same at first, but looking closely at how your symptoms start and how strong they are can help you tell the difference. Understanding what might be causing your illness also enables you to decide when to rest, when to test, and when to speak to a doctor.

Most adults start to feel better with rest, plenty of fluids, and simple care at home. But if your symptoms are getting worse or you are unsure what to do, it is safest to ask a doctor for advice.

Mobi Doctor can help you get medical guidance from the comfort of your home through an online consultation with a qualified doctor.