We analysed also the role of weather in transmission, identifying an effect of precipitation. Increased precipitation showed a dual effect, first reducing transmission after a two-week delay, then increasing it around five weeks later.
A comparative analysis of Chikungunya and Zika transmission,
J. Riou, C. Poletto, P.Y. Boëlle
Epidemics in press http://dx.doi.org/10.1016/j.epidem.2017.01.001 (2017)