WHO Official Defends Guidance: 'We're Not Seeing' Airborne Transmission
Dr. Hanan Balkhy of the World Health Organization says the evidence so far is that the coronavirus doesn't seem to linger in the air. Some virus transmission experts have criticized this guidance.
Đọc thêm tại NPR
at March 31, 2020 at 03:23AM
Health & Science
Thứ Ba, 31 tháng 3, 2020
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