Recruitment of vendors and consumers
Street food vendors were mapped at each selected market site. From 152 food vendors in 6 selected markets (sites), 58 food vendors were randomly selected; Ilala (13), Ubungo (23) and Kinondoni (22). In each selected market, 90 regular street foods consumers were recruited with a minimum of 7 regular consumers per vendor. Finally, 280 consumers were allocated into IP1 market sites and 280 were allocated to IP2 market sites. Allocation of both the clusters and study participants in the two study arms was at a ratio of 1:1 (