30 Dec. 2019 |
Reported pneumonia |
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31 Dec. |
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Forwarded reports |
Investigation in Wuhan |
Were sent reports of a cluster of cases |
Investigation of Huanan market and reported cases |
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1 Jan. 2020 |
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3 Jan. |
Reported no new cases |
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5 Jan. |
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8 Jan. |
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Developed new diagnostic kit |
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12 Jan. |
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Were sent reports of the gene sequence |
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20 Jan. |
Reported daily increased cases |
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Technical supports and legislative operations |
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Leader's instruction from the highest level |
21 Jan. |
Forwarded reports |
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22 Jan. |
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Announcements and a purpose-built hospital |
Emergency response level II |
Joint containment |
23 Jan. |
Constituted no PHEIC |
to |
24 Jan. |
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Level I for public health |