My husband and I had the two shots in the Pfizer primary series at the beginning of 2021 and the booster in September of that year. We had an additional booster on June 2 of this year, but decided to get the Moderna version. On July 17, after seeing double and feeling weak, my husband was admitted to the ED with possible TIA. At that time his iron was 58, down from 95 in January. He was released on July 20th with no confirmation of TIA. On August 31 he saw his hematologist who ordered iron infusion because his iron had decreased to 39. He had the infusion on Sept 9th. On Sept 22nd developed Afib with HR at 158, likely caused by low iron. Back to ED where he was stabilized and eventually diagnosed with autoimmune hemolytic anemia and given immunoglobulin infusions because his blood was hemolyzing - red blood cells breaking down. He's 91 and this was viewed as a safe therapy. He's now home, hemoglobin increasing, feels very good and we'll see the hematologist Oct 21st where I get to ask him what he thinks about the vaccine-low iron connection! Doctors have lots of patients, but I only have one and I'm always prowling around, trying to solve medical mysteries. BTW, after answering my husband's recent V-Safe check-in with negative information I have had a call from the Vaccine Management people but have not yet called back, but fully intend to. Sorry if TMI but I'm so happy to find this discussion!