I am still taking iron supplements....iron and ferritin levels have moved back into the normal range but they are at the very low level within that range. My husband also has low iron—and he is still very tired. I had assumed that it was the result of Covid itself but with all the anecdotal evidence out there, I'm thinking it may just as well been from the vaccine. We both had a Regeneron infusion and I never got the second shot (my husband did). We had Covid in March 2021. I do not plan to get the booster because at this point, I don't know what is worse, the virus or the "cure." Thank you for asking.