Fig. 2From: Dynamics of pyrethroid resistance in malaria vectors in southern Benin following a large scale implementation of vector control interventionsPhenotypic resistance to deltamethrin in Anopheles gambiae (s.l.) The scatter plot represents the mean mortalities with standard deviation based on 13 villages (a) and also according to surveys (b). The Mann-Whitney test showed significant time effect of sampling period on mosquito mortality while the variability between villages had no effectBack to article page