How Helpful Are Face Masks In Preventing The Spread Of Disease?
As China continues to report a growing number of cases of Wuhan coronavirus, images of people wearing face masks have become ubiquitous. How effective are these masks in stopping the virus' spread?
Đọc thêm tại NPR
at January 28, 2020 at 04:11AM
Health & Science
Thứ Ba, 28 tháng 1, 2020
Đăng ký:
Đăng Nhận xét (Atom)
0 nhận xét:
Đăng nhận xét