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- COVID-19 vaccines induce severe hemolysis in paroxysmal nocturnal hemoglobinuria https://ashpublications.org/blood/article/137/26/3670/475905/COVID-19-vaccines-induce-severe-hemolysis-in

This article presents case studies of 4 patients with a pre-existing condition called paroxysmal nocturnal hemoglobinuria (PNH). Paroxysmal nocturnal hemoglobinuria (PNH) is a rare acquired, life-threatening disease of the blood. The disease is characterized by destruction of red blood cells (hemolytic anemia), blood clots (thrombosis), and impaired bone marrow function (not making enough of the three blood components).

In these patients, it appears that the vaccine may induce worsening anemia.

Kvdp, does your daughter have PNH? How are doctors treating her low iron levels?