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COVID-19 surveillance in hospital using metamaterial antenna node LiFi network integration, where LiFi signals are optical wireless (OW), UV: sterilizer, and infrared temperature (Inf), which can perform within the hospital and inside the ICU as shown in Fig. 9 (a) and (b), respectively. FLC: fuzzy logic controller. This is the indoor transmission link. However, the transmission link loss is included in the calculation
