Fig. 3

A The correlation-spatial overlap ratio (CSR(x)) for two hosts moving according to an OU process with \(\sigma = 150 m\) with an attracting point at (0, 0). The different colored lines show different levels of social attraction between the two hosts, \(\xi\). The dashed line shows when non-independent movement and spatial overlap have the same contribution to FOI. The drift coefficient is \(c = 1 \text { hour}^{-1}\). B Same as A., but with a drift coefficient of \(c = 0.005 \text { hour}^{-1}\). C Example trajectories from two hosts moving with \(c = 1 \text { hour}^{-1}\) and \(\xi = 0.9\). Locations are recorded every 10 min and trajectories are over 60 days. D. Same as C., but with \(c = 0.005 \text { hour}^{-1}\)