 In this paper , confirmed cases of healthcare workers are considered as accurately small samples to analyze the impact of under-reporting on the spatiotemporal distribution of COVID-19 from three perspectives , namely : parameter estimation, spatiotemporal correlation, and spatiotemporal lag.
<clarity>  In this paper , confirmed cases of healthcare workers are considered as accurately small samples to analyze the impact of under-reporting on the spatiotemporal distribution of COVID-19 from three perspectives , namely : parameter estimation, spatiotemporal correlation, and spatiotemporal lag.
 In this study , confirmed cases of healthcare workers are considered as accurately small samples to analyze the impact of under-reporting on the spatiotemporal distribution of COVID-19 from three perspectives , namely : parameter estimation, spatiotemporal correlation, and spatiotemporal lag.