Safety and Risk of Sensitisation of the rdESAT-6 + rCFP-10 Skin Test Following Repeated Intradermal Administration

Inclusion Criteria: 1. Has signed an informed consent 2. Is willing and likely to be able to comply with the trial procedures 3. Is female/male non-black adult ≥ 18 years and ≤ 55 years of age 4. Is healthy according to a medical examination, medical history and laboratory investigations at inclusion 5. Is prepared to grant authorized persons access to their medical records Exclusion Criteria: 1. Has a history of tuberculosis or has had a known contact to a person with active tuberculosis 2. Has a positive QuantiFERON-TB Gold In Tube test result at inclusion 3. Laboratory parameters outside of normal range judged by principal investigator to be clinically significant and/or abnormal glucose or protein levels in a urine sample at inclusion 4. Has been in treatment with a product which is likely to modify the immune response within 3 months prior to the day of inclusion (e.g., immunoglobulin, systemic corticosteroids, methotrexate, azathioprine, cyclosporine, infliximab or blood products) 5. Has been vaccinated with a live vaccine within 6 months prior to the day of inclusion (e.g., MMR, yellow fever, or oral typhoid vaccines) 6. Has a known congenital or acquired immune deficiency 7. Has a disease affecting the lymphoid organs (e.g., Hodgkin's disease, lymphoma, leukemia, sarcoidosis) 8. Is known to be infected with HIV, HBV or HCV 9. Has a severe ongoing viral or bacterial infection that might affect the cell mediated immune response at inclusion 10. Has a C-reactive protein (CRP) level \> 50 mg/L 11. Has severe scarring, burn, rash, eczema, psoriasis, or any other skin disease at or near the injection site(s) 12. Has a condition in which repeated blood drawings pose more than minimal risk for the volunteer, such as haemophilia, other coagulation disorders, or significantly impaired venous access 13. Is actively participating in another clinical trial or has participated in previous clinical trials investigating the rdESAT-6 skin test reagent 14. Is pregnant according to urine pregnancy test at inclusion 15. Is a female not willing to use contraceptives or is breastfeeding 16. Has a condition which in the opinion of the investigator is not suitable for participation in the study