“…Published cases of parvovirus B19 complicated by HLH are summarized in Table 1 . Hemolytic diseases such as hereditary spherocytosis ( 42 – 45 ), sickle cell disease ( 40 ), alpha thalassemia ( 47 ), glucose-6-phosphate dehydrogenase deficiency ( 46 ), and autoimmune hemolytic anemia ( 41 ) were the most frequently reported primary disease. Also, a third of patients were immunocompromised, including patients with acquired immune deficiency syndrome ( 50 ), autoimmune diseases ( 37 – 39 ), undergoing chemotherapy ( 48 ), and post-transplantation patients ( 24 – 26 ), which can lead to persistent parvovirus B19 infection and may cause pure red cell aplasia.…”