Figure 1 Temporal distribution of daily COVID-19 confirmed cases between 23 February and 07 May 2020 in the State of Kuwait.

Figure 2 Time-dependent reproductive numbers (R(t)) and model-predicted incidences of COVID-19 cases in the State of Kuwait between 23 February and 07 May 2020. (A, C, and E) Blue lines indicate the calculated R(t)s; light blue shaded areas indicate their 95% confidence intervals (CI); and the magenta lines indicate R(t)s = 1. (B, D, and F) Gray lines indicate the daily observed cases, while the red lines indicate the predicted incidences by the R(t) model. (A and B) indicate the results for the state of Kuwait. (C and D) indicate results for citizens and residents. (E and F) indicate results for migrant workers. The red arrow indicates the highest number of daily secondary cases throughout the study period (R(t) = 3.5).

Figure 3 Geographical distribution of COVID-19 cases and their most likely significant spatiotemporal clusters in the State of Kuwait between 23 February and 07 May 2020. (A) Spatially smoothed geographical locations of confirmed cases by a kernel density function (case per 5 m2). The green square indicates the Aljleeb neighborhood, while the purple square indicates the Mahboula neighborhood. (B) Significant clusters identified by the retrospective scan statistic model. (C) Significant clusters identified by the prospective scan statistic model. The radius of the circles (km2) is proportional to the predicted spatial extent of a given cluster. The clusters are rank-ordered according to their significance (1 = the primary most likely cluster). Confounded clusters indicate clusters caused by both migrant workers and citizen/resident cases.