All mosquito colonies were maintained at 27 °C and 70% humidity with 12-h light/dark cycles. Larvae were fed tropical fish pellets (Tetra) whilst adults had access to 5% sucrose solution ad libitum. Blood meals were provided using a Hemotek artificial blood-feeding system (Hemotek Ltd) and human blood (Scottish National Blood Bank). Damp Grade 1 filter-paper (Whatman plc) was provided as an oviposition source for egg collection. Eggs were desiccated for 5–10 days before hatching in water containing 1 g/l bovine liver powder (MP Biomedicals). The wAlbB-carrying Ae. aegypti line used in this study was generated previously through embryo microinjection40 (link).
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