highly significantp < 0.001
However, the inclusion of 10 models within a delta AIC of 2—including the null model—suggested that the model was not robust and that a significant amount of the variance remained unexplained by the presence of chicken coops alone (Additional file 2 ). For the second model including the urban environmental variables, the number of infested houses to the south within a 100-m buffer showed a highly significant association with infestation (OR = 4.28, 95% CI = 1.51–2.84, p < 0.001).