Nils Wetzstein1, Alena-Pauline Drummer2, Annabelle Bockey3, Eva Herrmann4, Claus Philippe Küpper-Tetzel2, Christiana Graf5, Benjamin Koch6, Udo Goetsch7, Maria J G T Vehreschild2, Lorenzo Guglielmetti8,9, Berit Lange3, Thomas A Wichelhaus10, Christoph Stephan2. 1. Department of Internal Medicine, Infectious Diseases, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany. nils.wetzstein@kgu.de. 2. Department of Internal Medicine, Infectious Diseases, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany. 3. Department for Epidemiology, Helmholtz Centre for Infection Research, Braunschweig, Germany. 4. Institute of Biostatistics and Mathematical Modeling, Goethe University, Frankfurt am Main, Germany. 5. Department of Internal Medicine, Gastroenterology and Hepatology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany. 6. Department of Internal Medicine, Nephrology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany. 7. Health Protection Authority, City of Frankfurt, Frankfurt am Main, Germany. 8. Laboratoire de Bactériologie-Hygiène, Centre National de Référence des Mycobactéries et de la Résistance des Mycobactéries aux Antituberculeux, APHP, Groupe Hospitalier Universitaire Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France. 9. Sorbonne Université, INSERM, U1135, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France. 10. Institute of Medical Microbiology and Infection Control, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.
Abstract
INTRODUCTION: Tuberculosis (TB) is caused by M. tuberculosis complex (MTB) and pulmonary tuberculosis (PTB) is its classical manifestation. However, in some regions of the world, extrapulmonary TB (EPTB) seems to be more frequent. METHODS: We performed a retrospective cohort study of all TB patients treated at University Hospital Frankfurt, Germany, for the time period 2013-2018. Patient charts were reviewed and demographic, clinical, and microbiological data recorded. Patients were subdivided according to their geographic origins. RESULTS: Of the 378 included patients, 309 were born outside Germany (81.7%). Three WHO regions were significantly associated with the occurrence of isolated EPTB: the South-East Asian Region (OR 3.37, CI 1.74-6.66, p < 0.001), the African Region (2.20, CI 1.25-3.90, p = 0.006), and the Eastern Mediterranean Region (OR 3.18, CI 1.78-5.76, p < 0.001). On a country level, seven countries of origin could be demonstrated to be significantly associated with the occurrence of isolated EPTB: India (OR 5.58, CI 2.30-14.20, p < 0.001), Nepal (OR 12.75, CI 1.73-259.28, p = 0.027), Afghanistan (OR 3.64, CI 1.14-11.98, p = 0.029), Pakistan (OR 3.64, CI 1.14-11.98, p = 0.029), Eritrea (OR 3.32, CI 1.52-7.47, p = 0.003), Somalia (OR 7.08, CI 2.77-19.43, p < 0.001), and Turkey (OR 9.56, CI 2.52-47.19, p = 0.002). CONCLUSION: Geographical origin is a predictor for the occurrence of extrapulmonary TB. This might be linked to a delay in diagnosis in these patients, as well as specific responsible impairments of the host's immune system, possible virulence factors of MTB, and relevant comorbidities.
INTRODUCTION: Tuberculosis (TB) is caused by M. tuberculosis complex (MTB) and pulmonary tuberculosis (PTB) is its classical manifestation. However, in some regions of the world, extrapulmonary TB (EPTB) seems to be more frequent. METHODS: We performed a retrospective cohort study of all TB patients treated at University Hospital Frankfurt, Germany, for the time period 2013-2018. Patient charts were reviewed and demographic, clinical, and microbiological data recorded. Patients were subdivided according to their geographic origins. RESULTS: Of the 378 included patients, 309 were born outside Germany (81.7%). Three WHO regions were significantly associated with the occurrence of isolated EPTB: the South-East Asian Region (OR 3.37, CI 1.74-6.66, p < 0.001), the African Region (2.20, CI 1.25-3.90, p = 0.006), and the Eastern Mediterranean Region (OR 3.18, CI 1.78-5.76, p < 0.001). On a country level, seven countries of origin could be demonstrated to be significantly associated with the occurrence of isolated EPTB: India (OR 5.58, CI 2.30-14.20, p < 0.001), Nepal (OR 12.75, CI 1.73-259.28, p = 0.027), Afghanistan (OR 3.64, CI 1.14-11.98, p = 0.029), Pakistan (OR 3.64, CI 1.14-11.98, p = 0.029), Eritrea (OR 3.32, CI 1.52-7.47, p = 0.003), Somalia (OR 7.08, CI 2.77-19.43, p < 0.001), and Turkey (OR 9.56, CI 2.52-47.19, p = 0.002). CONCLUSION: Geographical origin is a predictor for the occurrence of extrapulmonary TB. This might be linked to a delay in diagnosis in these patients, as well as specific responsible impairments of the host's immune system, possible virulence factors of MTB, and relevant comorbidities.
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