Mutated H3N2 flu virus is circulating

Flu has come early this winter, and experts predict it could be a particularly nasty season because a new mutated version of the virus is circulating – known as H3N2.

The NHS has already sent out a “flu jab SOS” encouraging vulnerable people to get their free vaccination.

But should you pay for a jab even if you are generally fit and healthy?

The H3N2 “subclade K” is a type of seasonal influenza A virus. Some are calling it “super flu”.

People have not encountered much of it in recent years, which means there is less built up immunity against it in the community.

In the first week of December, the number of flu patients in hospital hit a record high in England for the time of year, and NHS leaders warned the country could be facing an unprecedented flu season.

A number of hospitals have said that the increasing numbers of people seeking treatment for the flu and other winter bugs – when coupled with wider pressures – are hitting them hard.

Some schools have had to bring back Covid-like measures to prevent the spread of flu, as rates of reported illnesses in schools and other educational settings rise.

The NHS offers a free flu vaccine to people who need it most, including:

• anyone aged 65 or over
• those have certain long-term health conditions
• pregnant women
• care home residents
• carers for older or disabled people, or those who receive a carer’s allowance
• people who live with someone who has a weakened immune system

Frontline health and social care workers can also get a flu vaccine through their employer.

A nasal spray version of the flu vaccine is also offered to children aged 2 to 3 years as well as school-aged children (reception to year 11).

Children can catch and spread flu easily. Vaccinating them also helps protect others who are at higher risk of getting seriously ill from flu.

Everyone else has to buy one.

Even if you are healthy, you might want to buy a flu vaccine this winter.

High street chemists sell the vaccine for around £20.

It’s best to get vaccinated sooner to protect yourself during winter.

The vaccine should provide protection throughout the current flu season.

Almost everybody can have the vaccine, but you should not be vaccinated if you have ever had a serious allergy to the vaccine, or any of its ingredients.

You should speak to the pharmacist if you are unsure.

The Department of Health and Social Care (DHSC) says there is no national shortage of the vaccine for those who need it the most – people who can get it for free from the NHS.

Almost 17 million vaccines have been delivered this autumn – 350,000 more compared to this time last year.

However, if you are buying a flu jab privately, you might need to shop around to find a pharmacy with enough stock.

The vaccine works against the H3N2 “superflu” mutation, and usually takes up to 14 days to take effect.

During this period, you’re still vulnerable to catching the virus.

Some people mistakenly think the vaccine has given them flu, but the vaccine does not cause flu – instead, it gives your body the instructions it needs to fight off an infection should you catch it.

There’s still a chance you might get flu after getting vaccinated, but it’s likely to be milder and not last as long.

Protection decreases over time which is why a vaccine is offered every year.

The vaccine is frequently updated to best match the strain or version of flu that experts expect will be circulating.

There are lots of coughs and colds doing the rounds. So how do you know if you have flu rather than something else? Your symptoms can give a clue.

Colds

• symptoms appear gradually
• mostly affect nose and throat
• early sign – pressure in your ears
• chestier, mucus cough

Flu

• comes on suddenly
• feel wiped out
• fever, muscle aches, exhaustion
• need bed rest
• dry cough

Covid

• typical flu symptoms
• loss of taste or smell
• diarrhoea or tummy upset

If you’re meeting people indoors, open a window for fresh air.

Practise good hygiene:

• cough into your bent elbow, or use a tissue and dispose of it afterwards in the nearest bin
• wash your hands frequently with warm water and soap
• clean your surroundings often, especially areas that are touched frequently such as door handles

If you are unwell but must go out, consider wearing a face mask to help protect others.