NHS bosses in Lincolnshire are urging people with chronic obstructive pulmonary disease (COPD) who have not yet had their flu jab to make an appointment.
A total of 12,372 people in Lincolnshire are diagnosed with the condition and are more at risk of developing serious complications from flu.
COPD is an umbrella term for a number of respiratory conditions including chronic bronchitis and emphysema, which prematurely age the lungs.
Dr Tony Hill, Director of Public Health for NHS Lincolnshire said: “People should not underestimate the dangers of flu.
“It is a highly infectious illness and people with long term conditions such as COPD can become seriously ill and may require hospital treatment if they catch flu.
“The jab is available for free at your GP surgery and I would strongly advise anyone who has not yet had the jab to contact their GP surgery to make an appointment as soon as possible.”
Dr Keith Prowse of the British Lung Foundation said: “People with lung conditions such as COPD are particularly at risk of being hospitalised if they get flu so it is essential that they protect themselves.
“We urge anyone who is living with a lung condition to visit their GP and get the jab or call the British Lung Foundation helpline 08458 50 50 20.”