Mahidol University2020-03-252020-03-2520202020https://repository.li.mahidol.ac.th/handle/20.500.14594/53500engMahidol UniversityPatient ClassificationHigh risk contactLow risk contactPrevention and control guidelinePatient Classification, Guideline for Contact Classification, based on risk level of COVID-19 and recommendation for PracticessImage