The size of the arrows shows the number of patients going in the direction of the arrow in the health care system. The size of the circles correlates to the number of patients visiting each respective site as the first place of contact (Mnazi Mmoja hospital, n = 21; private clinic/dispensary, n = 16; primary health care unit, n = 14; primary health care centre/district hospital, n = 9; private hospital, n = 8; pharmacy, n = 1). Colour—Dark grey, public health sector; light grey, private health sector. *Repeated visits at the same health care level, either same place or different health care provider at the same level. Abbreviations: PHCC, primary health care centre; PHCU, primary health care unit.