The HSE is reminding people that it is still not too late to get vaccinated against the flu. Its call comes after figures revealed that the number of flu-like illnesses has recently increased.

According to the figures, the number of reported cases of influenza-like illness (ILI) rose from 20.5 per 100,000 of the population in the first week of February to 32.4 per 100,000 last week. This is considered above threshold levels, ‘which means that flu is actively circulating in the community'.

Twenty-six people were hospitalised with flu last week, bringing the total number of hospitalised cases reported during the 2013/2014 flu season to 82. Of this 82, 29 have required care in an ICU (intensive care unit).

Meanwhile, five flu-linked deaths have been reported this season.

"It is still not too late for people who are at risk of the complications of flu to get vaccinated against the disease if they have not already done so. The vaccine is available free of charge from GPs for all people in at risk groups, and from pharmacists for everyone aged 65 and over. An administration charge may apply to people who don't hold medical cards or GP visit cards," said Dr Joan O'Donnell, a public health specialist with the HSE Health Protection Surveillance Centre.

High risk groups include those aged 65 or older, people with chronic diseases that require regular medical follow up such as lung disease, heart disease and diabetes, all pregnant women, healthcare workers and those who are morbidly obese, i.e. they have a body mass index greater than 40.

Dr O'Donnell noted that the symptoms of flu usually develop in just a few hours and can include a high temperature, sore throat, sore muscles, headache and a dry cough.

"This is different from the common cold, which tends to come on more gradually and usually includes a runny nose and a normal temperature. Anyone who gets flu should stay at home, rest, drink plenty of fluids and use over-the-counter remedies like paracetamol to ease symptoms," she said.

However, people in any of the high-risk categories who develop symptoms should contact their GP.

"Covering your nose and mouth with a tissue when you cough and sneeze, disposing of the tissue as soon as possible and cleaning your hands as soon as you can are important measures in helping prevent the spread of germs and reducing the risk of transmission," Dr O'Donnell added.