Data Aggregation 3 Data aggregation 3 Humans 3 Internet of things 3 Pandemics 3 data aggregation 3 human 3 pandemic 3 Article 2 Authentication 2 COVID-19 2 Classification (of information) 2 Cloud computing 2 Cloud-computing 2 Data aggregation problems 2 Data storage 2 Datacenter 2 Digital storage 2 Epidemiology 2 Gateways (computer networks) 2 Heterogeneous networks 2 Information classification 2 Internet protocols 2 Multisource data 2 Protocol adaptation layers 2 Storage in clouds 2 United States 2 Virtual gateways 2 disease burden 2 incidence 2