Table 1.

Evolving reporting criteria of COVID-19 in Taiwan.

Date of modification (designation)	Clinical criteria	Epidemic criteria	Laboratory criteria	Reporting criteria
Jan. 7, 2020 (A)	Have any one of the followings 1.Fever (>38 °C) and respiratory symptoms 2.Cough with tachypnea or respiratory difficulty 3.Radiologically- or pathologically-diagnosed pneumonia	Traveled to Wuhan, China within 14 days of disease onset	–	Fulfilling both clinical and epidemiologic criteria
Jan. 20, 2020 (B)	Have any one of the followings 1.Fever (>38 °C) and acute respiratory infection 2.Clinically-, radiologically- or pathologically-diagnosed pneumonia	Within 14 days of onset, have any one of the followings 1.Ever intimately contact with a probable or confirmed case, including (1) provide care or stay together without adequate personal protection equipment (2) direct contact with respiratory secretion or body fluids 2.History of traveling to or living in Wuhan, China	Have any one of the followings 1.SARS-CoV-2 identified from clinical specimens (oropharyngeal swab, sputum, or lower respiratory aspirates) by virus culture 2.Positive result for SARS-CoV-2 from clinical specimens by nucleic acid-based detection methods	Have any one of the followings 1.Fulfilling both clinical and epidemiologic criteria 2.Fulfilling the laboratory criteria
Jan. 25, 2020 (C)	Have any one of the followings 1.Fever (>38 °C) or acute respiratory infection 2.Same as above condition 2	Within 14 days of onset, have any one of the followings 1.History of traveling to Hubei province∗, China, or contact with a person with fever and respiratory symptoms from Hubei province∗, China ∗will be updated whenever 2.History of traveling to or living in China 3.Same as above condition 1	Same as above	Have any one of the followings 1.Fulfilling clinical criteria and epidemiologic criteria 1 or 3 2.Fulfilling clinical criteria 2 and epidemiologic criteria 2 3.Fulfilling the laboratory criteria
Jan. 31, 2020 (D)	Same as above	Within 14 days of onset, have any one of the followings 1.History of traveling to Hubei province∗, China, or contact with a person with fever or respiratory symptoms from Hubei province∗, China ∗will be updated whenever 2. & 3. Same as above conditions 2 & 3	Same as above	Same as above
Feb. 7, 2020 (E)	Same as above	Within 14 days of onset, have any one of the followings 1.History of traveling to Level-one epidemic region∗, contact with a person with fever or respiratory symptoms from Level-one epidemic region∗ ∗currently include Hubei and Guangdong provinces, China (will be updated whenever) 2. History of traveling to or living in China, Hong Kong or Macau 3. Same as above condition 3	Same as above	Same as above
Feb. 15, 2020 (F)	Same as above	Henan and Zhejiang provinces included as Level-one epidemic region	Same as above	Same as above
Feb. 28, 2020 (G)	Have any one of the followings 1.& 2. Unchanged 3. In case of community-acquired pneumonia, without history of traveling to epidemic regions, excluding possible etiologic agents, highly suspected by the clinical physician	Within 14 days of onset, have any one of the followings 1.History of traveling to epidemic regions∗, contact with a person with fever or respiratory symptoms from epidemic regions∗ ∗currently include China, Hong Kong, Macau, Korea, and Italy (will be updated whenever) 2. Same as above item 3. 3. Health care workers as profession 4. Clusters	Same as above	Have any one of the followings 1.Fulfilling clinical criteria 1 or 2 and epidemiologic criteria 1 or 2 2.Fulfilling clinical criteria 2 and epidemiologic criteria 3 or 4 3.Fulfilling clinical criteria 3 4.Fulfilling the laboratory criteria
March 1, 2020 (H)	Same as above	Iran included as an epidemic region	Same as above	Same as above