Catching the coronavirus from surfaces is rare. The World Health Organization and national public-health agencies need to clarify their advice. A team disinfecting the Qintai Grand Theatre in Wuhan, China, in January.Credit: Xia Junjun/VCG/Getty A year into the pandemic, the evidence is now clear. The coronavirus SARS-CoV-2 is transmitted predominantly through the air — by people talking and breat
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