Fig. 3From: A nowcast model to predict outdoor flea activity in real time for the contiguous United StatesA selection of forecasted flea activity index values for four selected time periods: 1 January 2020 (a), 1 April 2020 (b), 1 July 2020 (c) and 1 October 2020 (d)]. The full video is available as Additional file 1: Video fileBack to article page