Challenges for tuberculosis control at selected primary healthcare centers in Bangladesh: A mixed-method study

•Patient delay is related to poor care-seeking behavior and lack of awareness about TB symptoms.•A large number of patients seek initial treatment from village doctors or drug vendors.•Health system delay is related to inadequate manpower, unskilled staff, and limited diagnostic facilities.•Every second patient reported non-adherence to the directly observed treatment short-course (DOTS) guideline.•Insufficient administrative measures and structural facilities are in place for infection control at healthcare centers.