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Mosquito larvae sampling sites. Map of the mosquito larvae sampling sites within Västerbotten County, Sweden. Sample site B (N64.40° E21.20°) is where Sindbis-positive mosquitoes were found in 2013. Sites A–D are in the vicinity of site B and E–K south of site B around N64.24° E21.03°. Color images available online at www.liebertpub.com/vbz
