Table 2.

An overview of all methods and papers reviewed in this survey.

Section	Category	References
Detection and monitoring		(Arun et al., 2020; Choyon et al., 2020; Dhadge and Tilekar, 2020; Ding et al., 2020; Hossain et al., 2020; Josephine et al., 2020; Karthi and Jayakumar, 2020; Seshadri et al., 2020; Swayamsiddha and Mohanty, 2020; Al-Emran and Ehrenfeld, 2021; Anjali et al., 2021; Ashwin et al., 2021; Awotunde et al., 2021, 2022; Chakkor et al., 2021a,b; Elbasi et al., 2021; Lo and Sim, 2021; Lubecke et al., 2021; Mukati et al., 2021; Mumtaz et al., 2021; Ni et al., 2021b; Peladarinos et al., 2021; Rehman et al., 2021; Tan et al., 2021; Uddin et al., 2021; Zhang et al., 2021; Dadon et al., 2022; Goergen et al., 2022)
Contact tracing	Indoor contact tracing	(Jeong et al., 2019; Dmitrienko et al., 2020; Kumar et al., 2022; Li et al., 2020b; Otoom et al., 2020; Schmidtke, 2020; Thangamani et al., 2020; Abueg et al., 2021; Lo and Sim, 2021; Mcheick et al., 2021; Wojtusiak et al., 2021)
	Outdoor contact tracing	(Elbir et al., 2020; Maghdid and Ghafoor, 2020; Ting et al., 2020; Gouissem et al., 2021; Gupta et al., 2021; Khatib et al., 2021; Shi et al., 2021; Tu et al., 2021; Yi et al., 2021; Malloy et al., 2022)
Machine learning framework and approaches	ML on IoT	(Karmore et al., 2022; Magesh et al., 2020; Maghded et al., 2020; Sathyamoorthy et al., 2020; Vedaei et al., 2020; Alsarhan et al., 2021; Barnawi et al., 2021; Ghayvat et al., 2021; Purnomo et al., 2021; Zuhair et al., 2021; Almalki et al., 2022; Dataset, 2022b,f; Fahad et al., 2022)
	Cloud and 5G	(Alanazi et al., 2020; Al-Qaness et al., 2020; Rustam et al., 2020; Ahmed et al., 2021; Al-Turjman, 2021; Andreas et al., 2021; Chegini et al., 2021; Muhammad et al., 2021; Singh and Kaur, 2021; Siriwardhana et al., 2021; Dataset, 2022a,c,d,e,g; Khelili et al., 2022; Mir et al., 2022)
	Multimodal datasets	(Wang, 2003; Canziani et al., 2016; Ke et al., 2017; Deshpande and Schuller, 2020; Islam et al., 2020; Li et al., 2020a; Vaishya et al., 2020; Chen et al., 2021; Dogan et al., 2021; Lv et al., 2021; Muguli et al., 2021; Orlandic et al., 2021; Schuller et al., 2021; Shorfuzzaman, 2021; Wang et al., 2021; Xia et al., 2021; Zhou et al., 2021; Dang et al., 2022; Deshpande et al., 2022; Han et al., 2022)
	ML models	(Vekaria et al., 2020; Wang et al., 2020; Adhikari et al., 2021; Awal et al., 2021; Elbasi et al., 2021; Jing et al., 2021; Kanmani et al., 2021)
Telemedicine		(Bahl et al., 2020; Gadzinski et al., 2020; Ganapathy et al., 2020; Iyengar et al., 2020; Kichloo et al., 2020; Lukas et al., 2020; Ohannessian et al., 2020; Omboni, 2020; Royce et al., 2020; Sufian et al., 2020; Alam and Rahmani, 2021; Elagan et al., 2021; Gupta et al., 2021; Hassan et al., 2021; Iqbal et al., 2021; Jiang et al., 2021; Kocsisné and Attila, 2021; Tahiliani et al., 2021; Awotunde et al., 2022)
Security		(Dataset, 2017; Al-Turjman and Deebak, 2020; Fernández-Caramés et al., 2020; McLachlan et al., 2020; Rahman et al., 2020; Sharma et al., 2020; Sufian et al., 2020; Alam and Rahmani, 2021; Fourati and Samiha, 2021; Hassan et al., 2021; Ng et al., 2021; Ni et al., 2021a; Singh et al., 2021; Sowmiya et al., 2021; Tahiliani et al., 2021; Aich et al., 2022; Jain et al., 2022; Kallel et al., 2022; Xu et al., 2022; Liu et al., 2023)