If you're,allergic to eggs then the flu shot should be avoided. I personally don't know anyone that has ever had a reaction.“Most adults can have the flu vaccine, but you should avoid it if you have had a serious allergic reaction to a flu vaccine in the past.”Find information about the flu jab, including who should have it, why and when.www.nhs.uk
Above is a quote from the UK’s site. You have a point, that they seem to recommend it for at risk groups (people over 50, healthcare workers, etc.) more so than the general public. However, living in the US and having mine every year, I never had any side effects besides a slight soreness at the injection site. They asked me whether I had ever had an adverse reaction to it when I went in a few days ago. Makes me wonder how common adverse reactions are. But I feel like a lot of people get them every year in the US; it’s one of the relatively few things I use my healthcare plan for. A 60 plus year old colleague of mine got his for the first time in his life this year because his doctor recommended it; no problem. I wouldn’t get it if I knew I’d have significant side effects though- they showed a list of possible ones, including fever, before I signed my consent. I didn’t feel like it was pushed on me; in fact the info sheet warnings would have made me think twice if I hadn’t already had it many times. Anyway, I’m glad the flu, the one that drains people’s energy for weeks with high fever, doesn’t seem to circulate that much. I was always catching the office cold before *********; if influenza circulated back then I could have caught it too.