Asymptomatic cases refer to individuals who are infected with a disease but do not display any symptoms. In the context of the current COVID-19 pandemic, asymptomatic cases have become a major concern as they can unknowingly spread the virus to others. Understanding asymptomatic cases is important for public health efforts to control the spread of infectious diseases and to develop effective testing and monitoring strategies. Research into asymptomatic cases involves studying the prevalence, transmission, and long-term effects of asymptomatic infections in order to inform public health policies and interventions.