“As source control, findings from NIOSH research suggest that, even without covering the valve, N95 respirators with exhalation valves provide the same or better source control than surgical masks, procedure masks, cloth masks or fabric coverings.”.
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Bloomberg American Health Initiative 2017. Marissa is a Food Systems & Policy Administrator with Jefferson County Public Health in Colorado. She is
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Bloomberg American Health Initiative 2017. Della Wright, Evaluator and Assistant Director of the Childhood Wellbeing Division at the Deep South
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But its production, which involves cement, comes at a huge environmental cost — accounting for almost eight percent of carbon emissions globally.
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The digital yuan won't move China's currency up the global power rankings. Photographer: Yan Cong/Bloomberg.
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