Health chiefs are urging people in high risk groups to make sure they take up the offer of a free flu jab as the dark nights begin to draw in.

The message from Herts County Council’s public pealth team is: If you’re invited, please made a date to protect yourself.

They say that flu is unpleasant but usually clears up in a week or so for most people – but for some it can cause much more serious health problems.

You are at more risk if you are over 65, pregnant, very young (two, three or four years old), or have an existing health condition like severe asthma, chest or heart complaints or diabetes. If you fall into one of these groups you are entitled to free flu protection from your GP. Carers are eligible too.

The free flu vaccinations are safe and quick – young children get it through pain-free nasal spray, so there are no needles to worry about. Find out more at www.nhs.uk/flu2014

Teresa Heritage, County Hall’s cabinet member for public health and localism, said: “Flu isn’t just a cold, it can be a really serious illness for some people.

“If you’ve received a letter from your GP inviting you for a jab, I’d urge you to go and get vaccinated. It’s the best way of keeping yourself and those close to you flu safe over the winter months.”

The best time to get vaccinated is at the start of the flu season, which the experts say runs from October to early November, so get in early.

GPs will be writing to patients who are eligible for the jab to arrange an appointment.

However, if you don’t hear from your GP and think you might be at risk, get in touch with them or your practice nurse or midwife.

If you don’t fall into one of the at risk groups but want a flu jab, they are available at many local supermarkets and pharmacies.