Autoimmunity and B-cell dyscrasia in acute and chronic Q fever: A review of the literature.

Eur J Intern Med 2018 08 19;54:6-12. Epub 2018 Jun 19.

Department of Internal Medicine, Division of Infectious Diseases, Radboud university medical center, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands; Radboud Expert Center for Q fever, Radboud university medical center, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands. Electronic address:

Q fever infection can lead to chronic Q fever, a potentially lethal disease occurring in 1-5% of patients infected with Coxiella burnetii, characterized by the persistence of this intracellular bacterium. It usually presents as endocarditis, infected vascular aneurysms, or infected vascular prostheses. This systematic review of the literature discusses the various autoimmune syndromes and B-cell dyscrasias in acute and chronic Q fever patients, that may interfere with or impede recognition and diagnosis of Q fever. Reportedly, high concentrations of anti-cardiolipin antibodies may be found in acute Q fever patients, while specifically cardiac muscle antibodies have been reported during chronic Q fever. Systemic lupus erythematosus and antiphospholipid syndrome are the most frequently reported autoimmune syndromes, followed by neuromuscular disorders and vasculitis. B-cell dyscrasia, mostly cryoglobulinaemia, is predominantly described in chronic Q fever patients with endocarditis. We conclude that immunological (epi)phenomena are not rare during Q fever and may obscure the infectious etiology of the disease.

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http://dx.doi.org/10.1016/j.ejim.2018.06.007DOI Listing
August 2018
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