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Numbers of Anopheles caught in domestic window traps in Bioko in 2004–2005, disaggregated to show the effect of house spraying. (A) Graph reproduced from ref. 5. (B) The same data from Sharp et al., 2007, disaggregated into window-trap nights prespraying (green) and window trap nights postspraying (blue). The spray round was carried out between February and July 2004.
