“…Based on the study setting, three of the studies were conducted in Addis Ababa [ 11 , 17 , 21 ], two in the Tigray region [ 18 , 42 ], seven in the Amhara region [ 20 , 22 , 23 , 25 – 27 , 37 ], seven in the Oromia region [ 15 , 32 – 35 , 38 , 43 ], one in the SNNP region [ 24 ], one in the Benishangul region [ 39 ], and four were conducted nationwide [ 16 , 36 , 40 , 41 ]. Regarding the illness category, fifteen studies were conducted by including all the three childhood diarrhea, fever, and respiratory tract infections at the same time [ 15 , 17 , 20 – 25 , 27 , 32 , 33 , 36 – 38 , 42 ], four were for diarrhea only [ 18 , 21 , 26 , 43 ], three were for fever only [ 34 , 35 , 39 ], and three were for ARI only [ 16 , 40 , 41 ] ( Table 1 ).…”