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A. Average threshold for WNV circulation obtained combining vector-host ratio and dilution between 2011–2021 for Utrecht (the Netherlands). The lines represent the linear fitted relationship between the 10-log converted points; B. Thresholds obtained in each model iteration (points) and the fitted average (solid line) that resulted in the transmission of WNV given a vector-host ratio and dilution from 2010–2021 for Utrecht (the Netherlands).
