Adjusted impact of climate variables on the ZCL incidence estimated by GEE model.

*CI, confidence interval.aR1 refers to the mean rainfall below 37.34 mm; R2 is the rainfall above the 37.34 mm.bThe lag 2 in humidity and temperature refers to the effect of the months July and August of these climate variables on the ZCL cases that emerged in September and October respectively; ZCL incidence during the remaining months was influenced by the temperature and humidity of the month of September.