**2. Computational intelligence**

The computational intelligence arena is another discipline with ancient roots. Innovation always relies on discovery, and discovery depends on the advancement of technology. Certainly, same situation with Computational Intelligence. Theories produce by sciences that are investigated through experiment and the experiment rely on the direction of theories. Computational intelligence definition by [31] as the study of the design of "intelligent agents." Sound confusing, and so the researchers go on to define an agent as "something that acts in an environment." Agents act. Worms do that, and so do folks and thermostats. An intelligent agent acts in a way that is appropriate for the circumstances to achieve a goal. The intelligent agent learns and adapts [32]. CI is characterized by automatic adaptation and organizes accordingly concerning the implementation environment [33].

There is a lot of impressive opportunities provides by computational intelligence for advancing medical services such as diagnosis, treatment, prediction, etc. However, administrative management of the patient is not exempted by computational intelligence such as the personal information of patients. Screening of COVID-19 using polymerase chain reaction (PCR) can take a few hours/days which is problematic [6]. This shows the need for researchers to apply computational intelligence methods to improve the screening process and provide other alternative tools in screening, diagnosis of covid19, and treatment.

Also, applications areas of CI categorized by [33] are based on four main pillars of CI which include Neural networks which are applied to the category of the following problems such as ("clustering, classification, prediction, composition and control systems"). Secondly, Evolutionary computation is applied to ("route or path optimization, scheduling problem and medical diagnosis of diseases"). Furthermore, Fuzzy logic applied to ("vehicle monitoring, sensor data in home appliances and control systems"). Lastly, Expert systems are applied in ("financial applications, robot production, diagnostics, and various industry-based operations").
