Acute Q Fever after Kidney Transplantation: A Case Report.

Aims/Background Patients receiving kidney transplant experience immunosuppression, which increases the risk of bacterial, viral, fungal, and parasitic infections. Q fever is a potentially fatal infectious disease that affects immunocompromised renal transplant recipients and has implications in terms of severe consequences for the donor's kidney. Case Presentation A patient with acute Q fever infection following kidney transplantation was admitted to the Tsinghua Changgung Hospital in Beijing, China, in March 2021. Next-generation sequencing (NGS) was used to diagnose Q fever in the patient. Based on the patient's blood test, we detected Rickettsia, the causative agent of Q fever and a zoonotic disease that can manifest in acute or chronic forms in humans. Comprehensive data on clinical symptoms, blood tests, chest computed tomography (CT), NGS, Immunoglobulin G (IgG) antibody titer, and therapeutic efficacy associated with Q fever infection following renal transplantation in this patient were gathered. Conclusion This is the first reported case of acute Q fever occurring in a Chinese renal transplant recipient detected using metagenomic NGS. This case underscores the need to consider acute Q fever as a possible differential diagnosis in kidney transplant recipients with fever of unknown origin.