Fig. 2

History of ivermectin distribution in Asosa district, Ethiopia (2013–2017). The biannual ivermectin treatment began in 2015, and round I refers to the ivermectin treatment provided in December to January, and round II refers to ivermectin treatment distributed in April to May. a Total population treated; b Treatment coverage rate among the eligible population. NB: The ivermectin treatment records for the years 2014, 2016 (round II) and 2017 (round I) were not available and documented in the Asosa district health bureau