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Sampling areas and minimum travelling distances of blood-fed mosquitoes in Chester Zoo. Not all distances are shown. Red areas: zoo vertebrate exhibits; orange circles: sampling areas; green dots: exhibit centroids; dotted lines: minimum travelling distances; red line: zoos perimeter. Area A13 was not active in the 2017 sampling; areas A5, A6, and A7 were not active in the 2018 sampling; areas A4, A5, A6, A7, A10, and A11 were not active in the 2019 sampling
