M-A: Intravenous iron is associated with increased risk of infection when compared with oral iron or no iron, which must be balanced with the potential benefits of reducing blood transfusion requirements.

Risk of Infection Associated With Administration of Intravenous Iron: A Systematic Review and Meta-analysis – JAMA Network Open

Invited Commentary: Intravenous Iron and Infection Risk—Still an Unanswered Question – JAMA Network Open

Commentary on Twitter

In this systematic review and meta-analysis, administration of intravenous iron was associated with an increased risk of infection. This risk must be balanced with the potential benefits of treating anemia and reducing blood transfusion requirements. https://t.co/XkNJKCk7M7

— JAMA Network Open (@JAMANetworkOpen) November 12, 2021