“…Most commonly reported recruitment and retention strategies included provision of easily accessible testing sites (14 studies) [ 16 , 25 , 27 – 38 ]; use of multilingual staff or interpreters (11 studies) [ 16 , 25 – 29 , 33 – 34 , 36 – 38 ]; combining the recruitment and testing steps (10 studies) [ 16 , 25 – 27 , 29 , 34 – 38 ]; onsite evaluation of participants testing positive for TB infection (six studies) [ 27 , 29 , 31 , 32 , 35 , 37 ]; and advertising and marketing (five studies) [ 25 , 27 , 33 , 35 , 38 ]. Many studies used multiple strategies to enhance recruitment, for example, combining advertising or marketing with residence based recruitment.…”