Health officials are urging the public to stay vigilant as multiple respiratory viruses circulate at high levels across the UK this winter. Distinguishing between them, however, can be a challenge.
The Distinctive Symptom That Points to Covid
According to the UK Health Security Agency (UKHSA), one particular sign can help set a Covid-19 infection apart from influenza, RSV, or norovirus: a noticeable change in your sense of taste or smell. This symptom is more frequently associated with Covid than with other common seasonal ailments.
While self-isolation is no longer a legal requirement for those who test positive, the NHS continues to advise anyone with symptoms to stay at home and avoid contact with others to prevent further spread.
Comparing Winter Virus Symptoms
The UKHSA has tracked how Covid-19 symptoms have evolved. Many people now experience cold-like signs, but the full list of potential Covid symptoms includes:
- Fever or chills
- A new, continuous cough
- Shortness of breath
- Tiredness and body aches
- Headache and sore throat
- Blocked or runny nose
- Loss of appetite, nausea, or diarrhoea
- Change in sense of taste or smell
In contrast, flu often presents with pronounced cold-like symptoms such as a runny nose, sneezing, and watery eyes, alongside fever and aches. RSV (Respiratory Syncytial Virus) is notable for causing coughing, wheezing, breathlessness, fatigue, and a raised temperature. The chief symptoms of norovirus are nausea, diarrhoea, and vomiting, potentially accompanied by a high temperature and aching limbs.
Who is Eligible for Winter Vaccinations?
Protection remains crucial. The NHS is offering free winter vaccines to specific groups.
You are eligible for the winter Covid-19 vaccine if you are:
- Aged 75 or over (including those who will turn 75 by 31 January 2026).
- Aged 6 months to 74 years and have a weakened immune system due to a health condition or treatment.
- A resident of a care home for older adults.
The free NHS flu vaccine is available if you:
- Are 65 or over (including those turning 65 by 31 March 2026).
- Have certain long-term health conditions.
- Are pregnant.
- Live in a care home.
- Are a main carer for an older or disabled person.
- Live with someone with a weakened immune system.
Frontline health and social care workers are also eligible for a flu vaccine, typically arranged by their employer.
