Fig. 2

Percentage of Anopheles gambiae s.l. species collected by period and by district, before IRS (BIRS) in 2010, during IRS (DIRS) in 2016, and 4 years after IRS withdrawal (WIRS) in 2020; Ag, An. gambiae s.s.; Ac, An. coluzzii; Aa, An. arabiensis; hy, hybrids are An. gambiae s.s. and An. coluzzii