Subjects: PREVENTION of infectious disease transmission; RELATIVE medical risk; COVID-19SOUTH Korea
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Subjects: PREVENTION of infectious disease transmission; HEALTH policy; COVID-19CHINA
Subjects: PREVENTION of infectious disease transmission; MATHEMATICAL models; CROSS-sectional methodTAIWAN
Subjects: PREVENTION of infectious disease transmission; COVID-19; MANAGEMENT of medical recordsUNITED States
Subjects: TRANSMISSION of pathogenic microorganisms; PATHOGENIC microorganisms; BIOSAFETY
Subjects: INFECTIOUS disease transmission; PREVENTIVE medicine; LEUKEMIA in children