After a week of physical troubles due to covid, as I started getting better, I found a sort of fear/anxiety of losing loved ones took over me. resuming Rigorous

After a week of physical troubles due to covid, as I started getting better, I found a sort of fear/anxiety of losing loved ones took over me. resuming Rigorous meditation and getting back to work help me beat it in a week or two. Though I'm not fully convinced for needing vaccine if already gone through symptomatic covid. If I have got the real thing training the immune system, what real benefit a controlled training by vaccine would give over that?