RT Journal Article T1 Tuberculosis caused by Mycobacterium caprae in a camel (Camelus dromedarius) A1 Infantes Lorenzo, José Antonio A1 Romero Martínez, Beatriz A1 Rodríguez Bertos, Antonio Manuel A1 Roy, Álvaro A1 Ortega, Javier A1 Juan Ferré, Lucía De A1 Moreno, Inmaculada A1 Domínguez, Mercedes A1 Domínguez Rodríguez, Lucas José A1 Bezos Garrido, Javier AB Background: Animal tuberculosis (TB) is distributed worldwide and has a wide range of wild and domestic reservoirs. Few studies concerning TB in camelids have been published in the last decade, particularly as regards Old World Camelids (OWC), but the increase in reports of TB outbreaks in these species in recent years suggests a high susceptibility to the infection.Case presentation: We studied a dromedary camel (Camelus dromedarius) herd (n = 24) in which a Mycobacterium caprae infection was detected. The TB infection was confirmed in one animal at necropsy through the detection of TB lesions, mainly in the abdominal organs, and the subsequent isolation of M. caprae (SB0157 spoligotype). The whole herd was additionally tested using cellular and humoral based diagnostic techniques. The intradermal tuberculin test results were compared with those obtained using P22 ELISA for the detection of specific antibodies against the M. tuberculosis complex. The TB infected animal was a positive reactor to both the intradermal tuberculin tests and P22 ELISA, while the others were negative to all the diagnostic tests.Conclusion: The present study found M. caprae infection in OWC. This is the first report of M. caprae infection in an OWC not living in a zoo. Since the animal was born in the herd and fed with goat's milk, this practice was suspected to be the potential source of TB infection, which was not confirmed in the other animals present in the herd. Moreover, our results highlight that the intradermal tuberculin test and the P22 ELISA could be valuable tools for the diagnosis of TB in OWC. PB BioMed Central YR 2020 FD 2020 LK https://hdl.handle.net/20.500.14352/123147 UL https://hdl.handle.net/20.500.14352/123147 LA eng NO Infantes-Lorenzo, Romero, Rodríguez-Bertos, Roy, Ortega, de Juan, Moreno, Domínguez, Domínguez, & Bezos. (2020). Tuberculosis caused by Mycobacterium caprae in a camel (Camelus dromedarius). BMC Veterinary Research, 16(1). https://doi.org/10.1186/S12917-020-02665-0 NO Authors’ contributions JIL, BR and ARB performed the experiments, analysed and interpreted the data and wrote the first draft of the manuscript. JIL, ARB and JB were involved in interpreting the data. BR and LD analysed the data and revised the manuscript. JIL, BR and JB designed the study, analysed the data, and revised the manuscript. AR, JO, LJ, IM, MD LC and JB critically revised the manuscript. All the authors have read and approved the final manuscript. NO Ministerio de Economía, Comercio y Empresa (España) NO European Commission DS Docta Complutense RD 11 ago 2025