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31 dic 2019 anni - First cases arise, no evidence of human-to-human transmission

Descrizione:

Chinese authorities report a cluster of 27 pneumonia cases but zero evidence of human-to-human transmission.

Aggiunto al nastro di tempo:

COVID-19: Timeline of Proven and Disproven Statements

Bydandom
28 set 2020
0
0
307

Data:

31 dic 2019 anni
Adesso
~ 5 years and 5 months ago
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