I was nervous, because an allergy jab previously worsened a condition that I now have to live with. But I did my research, concluded that there was nothing in the covid jabs that would be likely to exacerbate my problem, and I'm having my booster tomorrow. Slightly nervous, I admit, but more about catching covid from all the people in the vaccination centre, than anything. I wrote about it here, trying not to be judgemental because I want people to be persuaded to do the right thing. Unless there's a really good reason not to. https://medium.com/indian-thoughts/i-was-nervous-about-the-vaccines-9df13a8d5b3d