This is true. Having the flu jab doesn't protect you from new strains of a virus. Your own body's defence mechanism does this. It does, however, protect you from any previous viruses that are doing the rounds. My father swears by the flu jab and it seems to work for him. I've never had one myself and I had flu (the real thing, not man flu) 3 years running but, touch wood, haven't been affected for 8 years now. I think if it works for you then carry on having it. Have a flu free christmas and a healthy new year!! BB