Fig. 1: Reconstruction of Ae. albopictus and Ae. aegypti spread.
From: Past and future spread of the arbovirus vectors Aedes aegypti and Aedes albopictus
a–c, Spread of Ae. albopictus (a) and Ae. aegypti (b) in the United States, and spread of Ae. albopictus in Europe (c). Estimates of speed of spread in km per year are based on thin spline regression on mosquito observations since their earliest detection in each continent. Red indicates fast dispersal whereas yellow and white indicate slower spread velocity measured in km per year (see legend below b). Areas highlighted in grey have no reported mosquito presence. d–f, Summaries of the speed of dispersal of Ae. albopictus (d) and Ae. aegypti (e) spread in the United States and of Ae. albopictus spread in Europe (f) starting from their date of first detection until 2017. The red line indicates the average velocity per year across all districts using the thin spline regression model.
