We read with great interest the article by Michel et al1 on a possible association between Helicobacter pylori infection and autoimmune thrombocytopenic purpura (AITP) in adults. The authors found no cross-reactivity between platelet and H pylori antibodies and, on this basis, they excluded the evidence of an association between bacterial infection and AITP.
Morselli M, Potenza L, Luppi M, Torelli G, Emilia G. Immune Thrombocytopenic Purpura and Helicobacter pylori Infection. Arch Intern Med. 2003;163(1):120. doi:10.1001/archinte.163.1.120-a