Clinical Laboratory Techniques/methods; Clinical Laboratory Techniques/standards; Coronavirus Infections/diagnosis; Coronavirus Infections/prevention & control; Pandemics/prevention & control; Pneumonia, Viral/diagnosis; Pneumonia, Viral/prevention & control; Antigens, Viral/analysis; COVID-19; COVID-19 Testing; Centers for Disease Control and Prevention, U.S.; Clinical Laboratory Techniques/economics; Clinical Laboratory Techniques/trends; Coronavirus Infections/economics; Coronavirus Infections/immunology; Coronavirus Infections/virology; Hand Disinfection; Humans; India/epidemiology; Masks; Pneumonia, Viral/immunology; Pneumonia, Viral/virology; Pregnancy Tests; RNA, Viral/analysis; Sensitivity and Specificity; Social Isolation; Time Factors; United States/epidemiology; United States Food and Drug Administration; Viral Load; World Health Organization

Immunology; Public health; SARS-CoV-2; Virology