iOS - Android In a bid to prevent people being hospitalised with flu and relieve pressure on the NHS, more people than ever – over four million – are being offered the free vaccine this year.Among the groups being offered are those aged 50 and over; children aged two to five years who are not yet at school; children over six months of age who are deemed ‘at risk’ with medical conditions such as asthma, diabetes, cystic fibrosis, multiple sclerosis, heart and lung diseases, or autoimmune