IL15 and tuberculosis: It is noteworthy that many studies have suggested to use IL-15 as an adjuvant for TB vaccines (4, 23–25) and thus it will be interesting to further investigate the use of 68-1 RhCMV/Δpp71-TB-6Ag vaccine along with IL-15 as an adjuvant to enhance both the protection signature and durability of the vaccine, making it a possible promising vaccine against pulmonary TB disease.