Mask or No Mask? This Is What the Virus Experts Say
Students wear masks as prevention against coronavirus during school assembly, in Hyderabad, on March 4, 2020. (Source: PTI) 

Mask or No Mask? This Is What the Virus Experts Say

(Bloomberg) -- As the Covid-19 pandemic has unfolded, authorities in different places have said different things about whether healthy people should go around wearing face masks to protect themselv...
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