Coxiella Burnetii Endocarditis In A Patient With Mycotic Cerebral Aneurysms


  • Souhayla Souaf Khalafi Division of Cardiac Surgery, University Hospital Santiago de Compostela, Spain
  • José Andrés Donoso Mera Division of Cardiac Surgery, University Hospital Santiago de Compostela, Spain
  • Pablo Manuel Varela García Division of Internal Medicine, University Hospital Santiago de Compostela, Spain
  • Agel Luis Fernández González Department of Surgery and Medico-Surgical Specialities, University of Santiago de Compostela, Spain



Coxiella burneti, Endocarditis, Q fever, Mycotic aneurism


Q fever is an ubiquitous zoonosis caused by Coxiella burnetii, an intracellular bacterium that can produce acute or chronic infections in humans. These forms are characterized by different evolution, serological profile and treatment that must be very long to achieve a cure in chronic forms. However, the serological profile for diagnosis and the real value of serology for predicting outcome are controversial, and management dilemmas for many patients with Q fever infection are continuously emerging. In this case report, we present a 20-year-old man from Nicaragua who worked as a farmer with a culture-negative infective endocarditis who presented with a mycotic aneurysm. The present report reviews the clinical presentation and diagnosis of Q fever IE.


Download data is not yet available.


MW Deyell, B Chiu, DB Ross, N Alvarez. Q fever endocarditis: A case report and review of the literature. Can J Cardiol 2006;22(9):781-785.

Siciliano RF, Strabelli TM, Zeigler R, Rodrigues C, Castelli JB, Grinberg M, Colombo S, da Silva LJ, Mendes do Nascimento EM, Pereira dos Santos FC, Uip DE. Infective endocarditis due to Bartonella spp. and Coxiella burnetii: experience at a cardiology hospital in Sao Paulo, Brazil. Ann N Y Acad Sci. 2006 Oct;1078:215-22. doi: 10.1196/annals.1374.123.

Okaro U., Addisu A., Casanas B., Anderson B. Bartonella Species, an Emerging Cause of Blood-Culture-Negative Endocarditis. Clin. Microbiol. Rev. 2017;30:709–746. doi: 10.1128/CMR.00013-17.

Marsch G., Orszag P., Mashaqi B., Kuehn C., Haverich A. Antibiotic therapy following polymerase chain reaction diagnosis of infective endocarditis: A single centre experience. Interact. Cardiovasc. Thorac. Surg. 2015;20:589–593. doi: 10.1093/icvts/ivv006.

Weiteng Wang, Oudi Chen, Weijiang Liu, Lixi Gan, Xin Li, Qingyan Ma, Xuejiao Hu, Xuhua Jian. Coxiella burnetii and Bartonella Endocarditis Diagnosed by Metagenomic Next-Generation Sequencing. J Clin Med. 2022 Dec; 11(23): 7150. doi: 10.3390/jcm11237150.

Lin GS, Zhao MM, Li XQ, Yu HX. A Case Report of Infective Endocarditis with Failure of the Empirical Treatment-Q Fever Endocarditis Diagnosed by Metagenomic Next-Generation Sequencing. Infect Drug Resist. 2022 May 18;15:2545-2550. doi: 10.2147IDR.S361969.

Fowler VG, Durack DT, Selton-Suty C, Athan E, Bayer AS, Chamis AL, Dahl A, DiBernardo L, Durante-Mangoni E, Duval X, Fortes C, Fosbøl E, Hannan MM, Hasse B, Hoen B, Karchmer AW, Mestres CA, Petti CA, Pizzi MN, Preston SD, Roque A, Vandenesch F, van der Meer JTM, van der Vaart TW, Miro JM. The 2023 Duke-ISCVID Criteria for Infective Endocarditis: Updating the Modified Duke Criteria. Clin Infect Dis. 2023 May 4:ciad271. doi: 10.1093/cid/ciad271.

Levesque B, De Serres G, Higgins R, et al. Seroepidemiologic study of three zoonoses (leptospirosis, Q fever, and tularemia) among trappers in Quebec, Canada. Clin Diagn Lab Immunol 1995; 2: 496-8.

Huang C, Ding H, Lin Y, Zhang Z, Fang X, Chen Y, Chen Y, Zhang C, Li W, Zhang W, Huang Z.Diagnosis of Coxiella burnetii Prosthetic Joint Infection Using mNGS and pt-NGS: A Case Report and Literature Review. Orthop Surg. 2023 Jan;15(1):371-376. doi: 10.1111/os.13600.

Fournier P.E., Gouriet F., Casalta J.P., Lepidi H., Chaudet H., Thuny F., Collart F., Habib G., Raoult D. Blood culture-negative endocarditis: Improving the diagnostic yield using new diagnostic tools. Medicine. 2017;96:e8392. doi: 10.1097/MD.0000000000008392.




How to Cite

Souaf Khalafi S, Donoso Mera JA, Varela García PM, Fernández González AL. Coxiella Burnetii Endocarditis In A Patient With Mycotic Cerebral Aneurysms. Rev Port Cir Cardiotorac Vasc [Internet]. 2024 Feb. 9 [cited 2024 Feb. 28];30(4):59-62. Available from:



Clinical Cases


Most read articles by the same author(s)